Não informado. (1919). Natural History. American Museum of Natural History.
Chicagoスタイル(17版)引用形式Não informado. Natural History. New York: American Museum of Natural History, 1919.
MLA(8版)引用形式Não informado. Natural History. American Museum of Natural History, 1919.
警告: この引用は必ずしも正確ではありません.