APA (7th ed.) Citation

Kielkopf, C. F. (1977). Formal sentential entailment. University Press of America.

Chicago Style (17th ed.) Citation

Kielkopf, Charles F. Formal Sentential Entailment. Washington: University Press of America, 1977.

MLA (9th ed.) Citation

Kielkopf, Charles F. Formal Sentential Entailment. University Press of America, 1977.

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