APA (7th ed.) Citation

Pope, C. H. (1939). Turtles of the United States & Canada. A.A. Knopf.

Chicago Style (17th ed.) Citation

Pope, Clifford H. Turtles of the United States & Canada. New York, London: A.A. Knopf, 1939.

MLA (9th ed.) Citation

Pope, Clifford H. Turtles of the United States & Canada. A.A. Knopf, 1939.