Mathematical Structuralism

Being Logical: A Guide to Good Thinking

A Rulebook for Arguments: Edition 5

Philosophy of Mathematics: Structure and Ontology

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

Varieties of Logic

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

The Oxford Handbook of Philosophy of Mathematics and Logic

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

Vagueness in Context

A Course in Miracles - Explanations of Major Themes

Mathematics and Its Logics: Philosophical Essays

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

Mathematics without Numbers: Towards a Modal-Structural Interpretation

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

Classical First-Order Logic

The Critical Thinking Toolkit

Logic for Philosophy