Παραπομπή σε μορφή APA (7η εκδ.)

Darwin, C. (1897). The expression of the emotions in man and animals: With photographic and other illus ([Authorized ed.].). D. Appleton and company.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Darwin, Charles. The Expression of the Emotions in Man and Animals: With Photographic and Other Illus. [Authorized ed.]. New York: D. Appleton and company, 1897.

Παραπομπή σε μορφή MLA (8th εκδ.)

Darwin, Charles. The Expression of the Emotions in Man and Animals: With Photographic and Other Illus. [Authorized ed.]. D. Appleton and company, 1897.