* [http://icube-icps.unistra.fr/img_auth.php/d/db/ModernC.pdf Modern C] - Very dense, but useful guide to C coding. Probably only useful if you are already very comfortable with programming fundamentals.
* [http://www.cs.utexas.edu/~EWD/ewd02xx/EWD249.PDF Dijkstra's Notes on structured programming] - Invented programming practice. Worth a read, and hilarious.