APA (7th ed.) Citation

Smullyan, R. M. (1968). First-order logic (2. print.). Springer.

Chicago Style (17th ed.) Citation

Smullyan, Raymond M. First-order Logic. 2. print. Berlin [u.a.]: Springer, 1968.

MLA (9th ed.) Citation

Smullyan, Raymond M. First-order Logic. 2. print. Springer, 1968.