References:

• Kernighan & Ritchie: The C Programming Language ("K&R" for short)
  • on reserve in the Engineering library .
  • a must-own for every non-trivial C-programmer
• C Programming Notes (notes on K&R)
• Errata for The C Programming Language, Second Edition

Tutorials:

• Brian W. Kernighan - Programming in C A Tutorial
• A C Programming tutorial from Strathclyde University. That's in Scotland.. :-)

Style Guides:

• C Style Guide

History:

• The Development of the C Language - a paper on the history of development of the C language, by Dennis Ritchie.