APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Smullyan, Raymond M. First-order Logic. Berlin: Springer, 1968.

MLA (9th ed.) Citation

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

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