Haeckel, E. (1896). The evolution of man: A popular exposition of the principal points of human ontogeny and phylogeny (Authorized ed.). Appleton.
Chicago-referens (17:e uppl.)Haeckel, Ernst. The Evolution of Man: A Popular Exposition of the Principal Points of Human Ontogeny and Phylogeny. Authorized ed. New York: Appleton, 1896.
MLA-referens (8:e uppl.)Haeckel, Ernst. The Evolution of Man: A Popular Exposition of the Principal Points of Human Ontogeny and Phylogeny. Authorized ed. Appleton, 1896.
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