The Justification of Deduction
Thinking About Logic: Classic Essays
Thinking about Logic is an accessible and thought-provoking collection of classic articles in the philosophy of logic. The editors have selected each essay for its brevity, clarity, and impact and have included insightful introductions and discussion questions to help readers acquire a more thorough understanding of fundamental logic concepts and a firmer command of the connections between formal logic and other areas of philosophical study.
Susan Haack, The Justification of Deduction Thinking About Logic: Classic Essays (2011).