APA (7th ed.) Zitazioa

SIMPSON, G. G. (1964). Life of the past: An introductionto paleontology. YaleUniversity.

Chicago Style (17th ed.) Zitazioa

SIMPSON, George Gaylord. Life of the Past: An Introductionto Paleontology. London: YaleUniversity, 1964.

MLA (9th ed.) Zitazioa

SIMPSON, George Gaylord. Life of the Past: An Introductionto Paleontology. YaleUniversity, 1964.

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