APA (7th ed.) Citation

Sanford, D. H. (1992). If P, then Q.: Conditionals and the foundations of reasoning. Routledge.

Chicago Style (17th ed.) Citation

Sanford, David H. If P, Then Q.: Conditionals and the Foundations of Reasoning. London: Routledge, 1992.

MLA (9th ed.) Citation

Sanford, David H. If P, Then Q.: Conditionals and the Foundations of Reasoning. Routledge, 1992.