Logic Colloquium '80

Being Logical: A Guide to Good Thinking

How to Solve It: A New Aspect of Mathematical Method

Logic Colloquium '87

A Rulebook for Arguments: Edition 5

Logically Fallacious: The Ultimate Collection of Over 300 Logical Fallacies (Academic Edition)

The Philosopher's Book of Questions & Answers: Questions to Open Your Mind

An Illustrated Book of Bad Arguments: Learn the Lost Art of Making Sense (Bad Arguments)

A Course in Miracles - Explanations of Major Themes

A Reasonable Response: Answers to Tough Questions on God, Christianity, and the Bible

Fast Math: Learn the Secrets of Mental Math: By Using Vedic Math and Other Math Tricks to Perform Mental Calculations from Multiplication to Percentages without Calculators

There Are Two Errors in the the Title of This Book, Revised and Expanded (Again): A Sourcebook of Philosophical Puzzles, Problems, and Paradoxes, Edition 3

The Critical Thinking Toolkit

Logic for Philosophy