Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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