Carr, A. F. (1952). Handbook of turtles: The turtles of the United States, Canada, and Baja California. Comstock Pub. Associates.
Cita Chicago (17th ed.)Carr, Archie Fairly. Handbook of Turtles: The Turtles of the United States, Canada, and Baja California. Ithaca, N.Y: Comstock Pub. Associates, 1952.
Cita MLA (9th ed.)Carr, Archie Fairly. Handbook of Turtles: The Turtles of the United States, Canada, and Baja California. Comstock Pub. Associates, 1952.
Atenció: Aquestes cites poden no estar 100% correctes.