Books

Puzzle Books by Paul Sloane and Des MacHale

Lateral Thinking Puzzlers

Challenging Lateral Thinking Puzzles

Great Lateral Thinking Puzzles

Test Your Lateral Thinking IQ

Improve Your Lateral Thinking : Puzzles...

Intriguing Lateral Thinking Puzzles

Ingenious Lateral Thinking Puzzles

Perplexing Lateral Thinking Puzzles

Tricky Lateral Thinking Puzzles

Other Puzzle books 

The Riddle of Scheherazade : And Other Amazing Puzzles, Ancient & Modern by Raymond Smullyan

Perplexing Puzzles and Tantalizing Teasers by Martin Gardner

The Puzzlemaster Presents 200 Mind-Bending Challenges from Npr by Will Shortz

aha! Insight by Martin Gardner

Mathematical Puzzles of Sam Loyd by Martin Gardner

Games for the Super Intelligent by James Fixx

Surprising Science Puzzles by Erwin Brecher

Cerebral Torment by Vince Tucker

Books on Thinking by Edward de Bono

Lateral Thinking - Creativity step by step

De Bono's Thinking Course

Teach your child how to think

Six Thinking Hats

New Thinking for the New Millenium

Creativity books

The Leader's Guide to Lateral Thinking Skills by Paul Sloane

Cracking Creativity by Michael Michalko

How to get Ideas by Jack Foster

Jump Start your Brain by Doug Hall

The Empty Raincoat by Charles Handy

Harvard Business Review on Breakthrough Thinking

If it ain't broke... Break it! by Robert Kriegel

Godel, Escher, Bach: an Eternal Golden Braid by Douglas Hofstadter