Cita APA (7a ed.)

Kegley, C. W., & Kegley, J. A. K. (1978). Introduction to logic. Charles E. Merrill Publishing.

Cita Chicago Style (17a ed.)

Kegley, Charles W.., y Jacquelyn Ann K. Kegley. Introduction to Logic. Columbus [i pozostałe]: Charles E. Merrill Publishing, 1978.

Cita MLA (9a ed.)

Kegley, Charles W.., y Jacquelyn Ann K. Kegley. Introduction to Logic. Charles E. Merrill Publishing, 1978.