Não informado. (1952). Popular series. Chicago Natural History Museum.
Chicagoスタイル(17版)引用形式Não informado. Popular Series. Chicago, Ill: Chicago Natural History Museum, 1952.
MLA(8版)引用形式Não informado. Popular Series. Chicago Natural History Museum, 1952.
警告: この引用は必ずしも正確ではありません.