APA (7th ed.) Citation

Prior, A. N. (1973). Formal logic (2nd ed.). Clarendon.

Chicago Style (17th ed.) Citation

Prior, A. N. Formal Logic. 2nd ed. Oxford: Clarendon, 1973.

MLA (9th ed.) Citation

Prior, A. N. Formal Logic. 2nd ed. Clarendon, 1973.

Warning: These citations may not always be 100% accurate.