Title: Mensa® for Kids: Fun Puzzle Challenges: Terrific Ways to Stretch Your Brain!, Author: Evelyn B. Christensen
Title: The Greatest Dot-to-Dot Super Challenge, Book 5, Author: David Kalvitis
Title: The Game of Logic, Author: Lewis Carroll
Title: The Game of Logic, Author: Lewis Carroll
Title: The Game of Logic, Author: Lewis Carroll
Title: The Game of Logic, Author: Lewis Carroll
Title: My Best Mathematical and Logic Puzzles, Author: Martin Gardner