APA Citation

Smullyan, R. M. (1961). Theory of formal systems: R. M. Smullyan. Princeton, NJ: Princeton University Pr..

Chicago Style Citation

Smullyan, R. M. Theory of Formal Systems: R. M. Smullyan. Princeton, NJ: Princeton University Pr., 1961.

MLA Citation

Smullyan, R. M. Theory of Formal Systems: R. M. Smullyan. Princeton, NJ: Princeton University Pr., 1961.

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