APA-referens (7:e uppl.)

Leffingwell, A. (1914). An ethical problem: Or, Sidelights upon scientific experimentation on man and animals. G. Bell and Sons; C.P. Farrell.

Chicago-referens (17:e uppl.)

Leffingwell, Albert. An Ethical Problem: Or, Sidelights upon Scientific Experimentation on Man and Animals. London, New York: G. Bell and Sons; C.P. Farrell, 1914.

MLA-referens (8:e uppl.)

Leffingwell, Albert. An Ethical Problem: Or, Sidelights upon Scientific Experimentation on Man and Animals. G. Bell and Sons; C.P. Farrell, 1914.