APA (7th ed.) Zitazioa

Kegley, C. W. (1978). Introduction to logic. Charles E. Mrrill.

Chicago Style (17th ed.) Zitazioa

Kegley, Charles W. Introduction to Logic. London: Charles E. Mrrill, 1978.

MLA (9th ed.) Zitazioa

Kegley, Charles W. Introduction to Logic. Charles E. Mrrill, 1978.