APA

Ditmars R. L., . (1910). Reptiles of the World. New York: The Macmillan Company.

Chicago

Ditmars Raymond L, . 1910. Reptiles of the World. New York: The Macmillan Company.

Harvard

Ditmars R. L., . (1910). Reptiles of the World. New York: The Macmillan Company.

MLA

Ditmars Raymond L, . Reptiles of the World. New York: The Macmillan Company. 1910.