Não informado. (2008). The University of Iowa Studies in Natural History. University of Iowa.
Chicagoスタイル(17版)引用形式Não informado. The University of Iowa Studies in Natural History. Iowa City, Iowa: University of Iowa, 2008.
MLA(8版)引用形式Não informado. The University of Iowa Studies in Natural History. University of Iowa, 2008.
警告: この引用は必ずしも正確ではありません.