Não informado. (2007). Annual report of the Director of the Board of Trustees. Field Museum of Natural History.
Chicagoスタイル(17版)引用形式Não informado. Annual Report of the Director of the Board of Trustees. Chicago, Ill: Field Museum of Natural History, 2007.
MLA(8版)引用形式Não informado. Annual Report of the Director of the Board of Trustees. Field Museum of Natural History, 2007.
警告: この引用は必ずしも正確ではありません.