Não informado. (2007). Report of the Penrose Research Laboratory. Zoological Society of Philadelphia.
Chicagoスタイル(17版)引用形式Não informado. Report of the Penrose Research Laboratory. Philadelphia, Pa: Zoological Society of Philadelphia, 2007.
MLA(8版)引用形式Não informado. Report of the Penrose Research Laboratory. Zoological Society of Philadelphia, 2007.
警告: この引用は必ずしも正確ではありません.