diff --git a/free-programming-books.md b/free-programming-books.md
index f4db9d120ed013fa9efc7b03a3742244bb08df86..66543e9fb8f8b0dcdac533f3dba4ed86c0941a6b 100644
--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -1072,6 +1072,7 @@ Original Source: [List of freely available programming books](http://web.archive
 * [Learn CSS Layout](http://learnlayout.com/)
 * [Scalable and Modular Architecture for CSS](http://smacss.com) - Jonathan Snook
 * [Web Audio API](http://chimera.labs.oreilly.com/books/1234000001552) - Boris Smus
+* [Adaptive Web Design] (http://adaptivewebdesign.info/1st-edition/) - Aaron Gustafson
 
 
 #### Bootstrap