Properly reference Code Complete.

doc/doxygen/references.bib

@@ -907,3 +907,12 @@ @article{melenk2001hp
   year      = {2001},
   doi       = {10.1023/A:1014268310921}
 }
+
+
+
+@Book{CodeComplete,
+  author =    {Steve McConnell},
+  title =        {Code Complete},
+  publisher =    {Microsoft Press},
+  year =         2004,
+  edition =   {second}}

examples/step-1/doc/intro.dox

@@ -188,7 +188,7 @@ are worthwhile browsing through before you start any large-scale programming:
 - You will benefit from becoming a better programmer. An excellent
   resource to this end is the book "<a
   href="https://en.wikipedia.org/wiki/Code_Complete">Code
-  Complete</a>" by Steve McConnell (ISBN 978-0735619678). It's already
+  Complete</a>" by Steve McConnell @code CodeComplete . It's already
   a few years old, with the last edition published in 2004, but it has
   lost none of its appeal as a guide to good programming practices,
   and some of the principal developers use it as a group reading

examples/step-26/step-26.cc

@@ -648,10 +648,10 @@ namespace Step26
 // state that there may be occasions where they can help avoid code
 // duplication and awkward control flow. This may be one of these
 // places, and it matches the position Steve McConnell takes in his
-// excellent book "Code Complete" about good programming practices
-// (see the mention of this book in the introduction of step-1) that
-// spends a surprising ten pages on the question of <code>goto</code>
-// in general.
+// excellent book "Code Complete" @cite CodeComplete about good
+// programming practices (see the mention of this book in the
+// introduction of step-1) that spends a surprising ten pages on the
+// question of <code>goto</code> in general.
 
 
 // @sect3{The <code>main</code> function}