APA

Copi I. M., Gould J. A., . (1972). Readings on logic. New York: Macmillan.

Chicago

Copi Irving M, Gould James Adams, . 1972. Readings on logic. New York: Macmillan.

Harvard

Copi I. M., Gould J. A., . (1972). Readings on logic. New York: Macmillan.

MLA

Copi Irving M, Gould James Adams, . Readings on logic. New York: Macmillan. 1972.