Não informado. School service series. American Museum of Natural History.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. School Service Series. New York: American Museum of Natural History.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. School Service Series. American Museum of Natural History.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.