Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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.

Παραπομπή σε μορφή MLA (8th εκδ.)

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