diff --git a/README.md b/README.md
index eebf4e9..88bd0b0 100644
--- a/README.md
+++ b/README.md
@@ -37,23 +37,23 @@ All spatial data is an [**sf** object](https://r-spatial.github.io/sf/) with [ge
 | 2 | Villages | Limits from villages | Unknown | polygon | [INE 2001](http://170.238.108.227/binhnd/RpWebEngine.exe/Portal?BASE=CPVHND2001&lang=ESP) |
 | 3 | Municipalities | Limits of 4 municipalities that convey in **La Tigra** | Unknown | polygon | [INE 2001](http://170.238.108.227/binhnd/RpWebEngine.exe/Portal?BASE=CPVHND2001&lang=ESP)| 
 | 4 | Departments | Francisco Morazán department | Unknown | polygon | [INE 2001](http://170.238.108.227/binhnd/RpWebEngine.exe/Portal?BASE=CPVHND2001&lang=ESP)| 
-| 5 | PNLT | National park limits from 1980 |Unknown |polygon | Decreto Ley 976-80 |
+| 5 | PNLT | National park limits from 1980 |Unknown |polygon | [Decreto Ley 976-80](https://acchonduras.files.wordpress.com/2014/07/pm-pnltfinal.pdf) |
 
 ## 2. Development structures 
 
 | # | sf object | Details | Scale | Geometry | Source |
 | :---: | :---: | :---: | :---: | :---: | :---: |
-| 1 | Water intake structures| Water micro dams | Unknown | polygon | AMITIGRA | 
+| 1 | Water intake structures| Water micro dams | Unknown | polygon | [AMITIGRA](https://acchonduras.files.wordpress.com/2014/07/pm-pnltfinal.pdf) | 
 | 2 | Schools | Schools location within La Tigra | Unknown | point | Secretaría de Educación |
-| 3 | Trails | Turistic trails | Unknown | line | AMITIGRA |
-| 4 | Visitors Centers | Centers with personal from AMITIGRA | Unknown | point | AMITIGRA |
+| 3 | Trails | Turistic trails | Unknown | line | [AMITIGRA](https://acchonduras.files.wordpress.com/2014/07/pm-pnltfinal.pdf) |
+| 4 | Visitors Centers | Centers with personal from AMITIGRA | Unknown | point | [AMITIGRA](https://acchonduras.files.wordpress.com/2014/07/pm-pnltfinal.pdf) |
 | 5 | Roads | Road network with a development classification | Unknown | line | SOPTRAVI 2000 |
 
 ## 3. Natural resources
 
 | # | sf object | Details | Scale | Geometry | Source |
 | :---: | :---: | :---: | :---: | :---: | :---: |
-| 1 | Microbasins | Derived from the 30 meters SRTM digital elevation model | 1:114,000 | polygon | AMITIGRA 2020 | 
+| 1 | Microbasins | Derived from the 30 meters SRTM digital elevation model | 1:114,000 | polygon | [AMITIGRA](https://acchonduras.files.wordpress.com/2014/07/pm-pnltfinal.pdf) | 
 | 2 | Holdridge | Holdrige Life Zone Classification | 1:1,000,000 | polygon | [Holdridge 1962](https://searchworks.stanford.edu/view/2788989) |
 | 3 | Rivers | Water bodies | 1:50,000 | line | [IGN](https://www.ign.hn/index.php) |
 | 4 | LULC2020 | Land use and land cover for year 2020 | 10 meters pixel | polygon | AMITIGRA 2020 |