Title: Puzzle Baron's Kids Logic Puzzles: Nearly 400 Brain Challenges for Developing Minds, Author: Puzzle Baron
Title: Kendoku: Volume 2: The Next Logical Step, Author: David Levy
Title: Maze Kids 8-10 Years: 2-in-1 Ultimate Maze Puzzle Games for Smart Girls, 8x10, Square and Circle Puzzle for Fun, Author: Alice Shermann