Não informado. School service series. American Museum of Natural History.
Chicago-Zitierstil (17. Ausg.)Não informado. School Service Series. New York: American Museum of Natural History.
MLA-Zitierstil (8. Ausg.)Não informado. School Service Series. American Museum of Natural History.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.