Παραπομπή σε μορφή APA (7η εκδ.)

Haeckel, E. (1896). The evolution of man: A popular exposition of the principal points of human ontogeny and phylogeny (Authorized ed.). Appleton.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Haeckel, Ernst. The Evolution of Man: A Popular Exposition of the Principal Points of Human Ontogeny and Phylogeny. Authorized ed. New York: Appleton, 1896.

Παραπομπή σε μορφή MLA (8th εκδ.)

Haeckel, Ernst. The Evolution of Man: A Popular Exposition of the Principal Points of Human Ontogeny and Phylogeny. Authorized ed. Appleton, 1896.