Advanced IQ Tests: The Toughest Practice Questions to Test Your Lateral Thinking, Problem Solving and Reasoning Skills (Testing Series)
Philip Carteris a UK IQ test expert who is continually devising new IQ tests and puzzles. He has written over sixty books covering all aspects of puzzles, crosswords, testing, and reasoning skills. These includeIQ and Psychometric Tests,IQ and Personality Tests,IQ and Aptitude Tests, Test Your IQ, Succeed at IQ Tests, Test and Assess Your IQ, The IQ & Psychometric Test WorkbookandThe Ultimate IQ Test Book, all published by Kogan Page.