Logic Workbook for Gritty Kids: Spatial reasoning, math puzzles, word games, logic problems, activities, two-player games. (The Gritty Little Lamb ... & STEM skills in kids ages 6, 7, 8, 9, 10.)

Gödel, Escher, Bach: An Eternal Golden Braid

The Fallacy Detective: Thirty-Eight Lessons on How to Recognize Bad Reasoning

My First Logic Workbook for Gritty Kids: Spatial Reasoning, Math Puzzles, Logic Problems, Focus Activities. (Develop Problem Solving, Critical Thinking, Analytical & STEM Skills in Kids Ages 4, 5, 6.)

How to Prove It: A Structured Approach

How to Solve It: A New Aspect of Mathematical Method (Princeton Science Library)

The Ultimate Logic Grid Puzzle Book for Adults: 100 Fun and Challenging Puzzles (Logic Puzzles - The Ultimate Collection)

Proofs: A Long-Form Mathematics Textbook (The Long-Form Math Textbook Series)

The Thinking Toolbox: Thirty-Five Lessons That Will Build Your Reasoning Skills

Sudoku Large Print With Tips and Tricks: 150 Medium to Hard Puzzles for Adults & Seniors for Gradually Improving Sudoku Skills, One Per Page (Sudoku Sensei Series)