APA (7th ed.) Citation

Smullyan, R. M. (1985). Theory of formal systems (Repr. from the hardcover ed., 1961.). Princeton Univ. Pr.

Chicago Style (17th ed.) Citation

Smullyan, Raymond M. Theory of Formal Systems. Repr. from the hardcover ed., 1961. Princeton, N. J: Princeton Univ. Pr, 1985.

MLA (9th ed.) Citation

Smullyan, Raymond M. Theory of Formal Systems. Repr. from the hardcover ed., 1961. Princeton Univ. Pr, 1985.

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