APA (7th ed.) Citation

Ernst, C. H. (1989). Turtles of the world. Smithsonian Institution.

Chicago Style (17th ed.) Citation

Ernst, Carl H. Turtles of the World. Smithsonian Institution, 1989.

MLA (8th ed.) Citation

Ernst, Carl H. Turtles of the World. Smithsonian Institution, 1989.

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