Title: Bletchley Park IQ Puzzles, Author: Arcturus Publishing
Title: Brain Games: Brain Teasers, Logic Tests, and Puzzles to Exercise Your Mind, Author: Allen D. Bragdon
Title: Der IQ-Test: Messen und trainieren Sie Ihre Brainpower, Author: Ken Russell
Title: Intelligence and How to Get It: Why Schools and Cultures Count, Author: Richard E. Nisbett
Title: The Complete Idiot's Guide to Self-Testing Your IQ, Author: Jean Cirillo