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