APA (7th ed.) Citation

Hay, O. P. (1908). The fossil turtles of North America. Carnegie Inst.

Chicago Style (17th ed.) Citation

Hay, Oliver Perry. The Fossil Turtles of North America. Washington, DC: Carnegie Inst, 1908.

MLA (9th ed.) Citation

Hay, Oliver Perry. The Fossil Turtles of North America. Carnegie Inst, 1908.

Warning: These citations may not always be 100% accurate.