The osteology of the reptiles

MLA

Williston, Samuel Wendell and William K. Gregory. The osteology of the reptiles. Cambridge : Harvard University Press, 1925.

APA

Williston, S. & Gregory, W. (1925). The osteology of the reptiles. Cambridge : Harvard University Press.

Chicago

Williston, Samuel Wendell and William K. Gregory. The osteology of the reptiles. Edited by William K. Gregory. Cambridge : Harvard University Press, 1925.