MLA

Rádl, Emanuel, and Edith Jessie Hatfield. The History of Biological Theories. London: H. Milford, Oxford university press, 1930.

APA

Rádl, E., & Hatfield, E. Jessie. (1930). The history of biological theories. London: H. Milford, Oxford university press.

Chicago

Rádl, Emanuel, The History of Biological Theories. Translated by Edith Jessie Hatfield. London: H. Milford, Oxford university press, 1930.