Cita APA (7a ed.)

Copi, I. M. (1964). Introduction to logic (2nd ed., 7th print.). MacMillan.

Cita Chicago Style (17a ed.)

Copi, Irving M. Introduction to Logic. 2nd ed., 7th print. New York: MacMillan, 1964.

Cita MLA (9a ed.)

Copi, Irving M. Introduction to Logic. 2nd ed., 7th print. MacMillan, 1964.