The history of biological theories
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.