Não informado. (2008). State University of Iowa studies in natural history. State University of Iowa.
Cita Chicago Style (17a ed.)Não informado. State University of Iowa Studies in Natural History. Iowa City, Iowa: State University of Iowa, 2008.
Cita MLA (8a ed.)Não informado. State University of Iowa Studies in Natural History. State University of Iowa, 2008.
Precaución: Estas citas no son 100% exactas.