Cita APA (7th ed.)

Copi, I. M., & Gould, J. A. (1972). Readings on logic (2nd ed.). Macmillan.

Cita Chicago (17th ed.)

Copi, Irving M., i James A. Gould. Readings on Logic. 2nd ed. New York: Macmillan, 1972.

Cita MLA (9th ed.)

Copi, Irving M., i James A. Gould. Readings on Logic. 2nd ed. Macmillan, 1972.