diff --git a/lib/query/taxonomy/base-taxonomy-query.class.ts b/lib/query/taxonomy/base-taxonomy-query.class.ts
index b96875f9..cdf707e9 100644
--- a/lib/query/taxonomy/base-taxonomy-query.class.ts
+++ b/lib/query/taxonomy/base-taxonomy-query.class.ts
@@ -13,6 +13,9 @@ import { QueryConfig } from '../../models/common/query.config';
 // base query
 import { BaseQuery } from '../common/base-query.class';
 
+// models
+import { IHeader } from '../../interfaces/common/iheader.interface';
+
 // rxjs
 import { Observable } from 'rxjs/Rx';
 
@@ -28,6 +31,10 @@ export abstract class BaseTaxonomyQuery extends BaseQuery {
         super(config)
     }
 
+    getHeaders(): IHeader[] {
+        return super.getHeadersInternal(this.queryConfig);
+    }
+
     protected getTaxonomyQueryUrl(taxonomyCodename: string): string {
         var action = '/' + this.taxonomiesEndpoint + '/' + taxonomyCodename;
 
@@ -41,10 +48,10 @@ export abstract class BaseTaxonomyQuery extends BaseQuery {
     }
 
     protected runTaxonomyQuery(codename: string): Observable<TaxonomyResponses.TaxonomyResponse> {
-        return super.getTaxonomy(this.getTaxonomyQueryUrl(codename));
+        return super.getTaxonomy(this.getTaxonomyQueryUrl(codename), this.queryConfig);
     }
 
     protected runTaxonomiesQuery(): Observable<TaxonomyResponses.TaxonomiesResponse> {
-        return super.getTaxonomies(this.getTaxonomiesQueryUrl());
+        return super.getTaxonomies(this.getTaxonomiesQueryUrl(), this.queryConfig);
     }
 }
\ No newline at end of file
diff --git a/lib/query/type/base-type-query.class.ts b/lib/query/type/base-type-query.class.ts
index 68a40ca0..fa991914 100644
--- a/lib/query/type/base-type-query.class.ts
+++ b/lib/query/type/base-type-query.class.ts
@@ -13,6 +13,9 @@ import { ItemQueryConfig } from '../../models/item/item-query.config';
 // base query
 import { BaseQuery } from '../common/base-query.class';
 
+// models
+import { IHeader } from '../../interfaces/common/iheader.interface';
+
 // rxjs
 import { Observable } from 'rxjs/Rx';
 
@@ -27,6 +30,10 @@ export abstract class BaseTypeQuery extends BaseQuery {
         super(config)
     }
 
+    getHeaders(): IHeader[] {
+        return super.getHeadersInternal(this._queryConfig);
+    }
+
     protected getSingleTypeQueryUrl(codename: string): string {
         var action = '/types/' + codename;
 
@@ -40,10 +47,10 @@ export abstract class BaseTypeQuery extends BaseQuery {
     }
 
     protected runMultipleTypesQuery(): Observable<TypeResponses.DeliveryTypeListingResponse> {
-        return super.getMultipleTypes(this.getMultipleTypesQueryUrl());
+        return super.getMultipleTypes(this.getMultipleTypesQueryUrl(), this._queryConfig);
     }
 
     protected runSingleTypeQuery(codename: string): Observable<TypeResponses.DeliveryTypeResponse> {
-        return super.getSingleType(this.getSingleTypeQueryUrl(codename));
+        return super.getSingleType(this.getSingleTypeQueryUrl(codename), this._queryConfig);
     }
 }
\ No newline at end of file
diff --git a/lib/services/query.service.ts b/lib/services/query.service.ts
index 5c516915..9ae5432a 100644
--- a/lib/services/query.service.ts
+++ b/lib/services/query.service.ts
@@ -251,8 +251,8 @@ export abstract class QueryService {
             });
     }
 
-    protected getSingleType(url: string): Observable<TypeResponses.DeliveryTypeResponse> {
-        return ajax.getJSON(url)
+    protected getSingleType(url: string, queryConfig: IQueryConfig): Observable<TypeResponses.DeliveryTypeResponse> {
+        return ajax.getJSON(url, this.getHeadersJson(queryConfig))
             .map(json => {
                 return this.getSingleTypeResponse(json)
             })
@@ -261,8 +261,8 @@ export abstract class QueryService {
             });
     }
 
-    protected getMultipleTypes(url: string): Observable<TypeResponses.DeliveryTypeListingResponse> {
-        return ajax.getJSON(url)
+    protected getMultipleTypes(url: string, queryConfig: IQueryConfig): Observable<TypeResponses.DeliveryTypeListingResponse> {
+        return ajax.getJSON(url, this.getHeadersJson(queryConfig))
             .map(json => {
                 return this.getMultipleTypeResponse(json)
             })
@@ -271,8 +271,8 @@ export abstract class QueryService {
             });
     }
 
-    protected getTaxonomy(url: string): Observable<TaxonomyResponses.TaxonomyResponse> {
-        return ajax.getJSON(url)
+    protected getTaxonomy(url: string, queryConfig: IQueryConfig): Observable<TaxonomyResponses.TaxonomyResponse> {
+        return ajax.getJSON(url, this.getHeadersJson(queryConfig))
             .map(json => {
                 return this.getTaxonomyResponse(json)
             })
@@ -281,8 +281,8 @@ export abstract class QueryService {
             });
     }
 
-    protected getTaxonomies(url: string): Observable<TaxonomyResponses.TaxonomiesResponse> {
-        return ajax.getJSON(url)
+    protected getTaxonomies(url: string, queryConfig: IQueryConfig): Observable<TaxonomyResponses.TaxonomiesResponse> {
+        return ajax.getJSON(url, this.getHeadersJson(queryConfig))
             .map(json => {
                 return this.getTaxonomiesResponse(json)
             })
diff --git a/test/isolated-tests/url/preview-url.spec.ts b/test/isolated-tests/url/preview-url.spec.ts
index 321e79e0..7cacd178 100644
--- a/test/isolated-tests/url/preview-url.spec.ts
+++ b/test/isolated-tests/url/preview-url.spec.ts
@@ -25,12 +25,24 @@ describe('Preview URL', () => {
         expect(url).toContain(context.projectId)
     });
 
-    it(`preview authorization header should be defined (global config)'`, () => {
+    it(`preview authorization header should be defined when getting items (global config)'`, () => {
         var headers = context.deliveryClient.items().getHeaders();
         var authorizationHeader = headers.find(m => m.header === 'authorization');
         expect(authorizationHeader).toBeDefined()
     });
 
+    it(`preview authorization header should be defined when getting taxonomies (global config)'`, () => {
+        var headers = context.deliveryClient.types().getHeaders();
+        var authorizationHeader = headers.find(m => m.header === 'authorization');
+        expect(authorizationHeader).toBeDefined()
+    });
+
+    it(`preview authorization header should be defined for getting types (global config)'`, () => {
+        var headers = context.deliveryClient.taxonomies().getHeaders();
+        var authorizationHeader = headers.find(m => m.header === 'authorization');
+        expect(authorizationHeader).toBeDefined()
+    });
+
     it(`preview authorization header should contain preview API key (global config)'`, () => {
         var headers = context.deliveryClient.items().getHeaders();
         var authorizationHeader = headers.find(m => m.header === 'authorization');