Não informado. (2000). University of Iowa studies in sociology, economics, politics and history. University of Iowa.
Cita Chicago Style (17a ed.)Não informado. University of Iowa Studies in Sociology, Economics, Politics and History. Iowa City, Iowa: University of Iowa, 2000.
Cita MLA (8a ed.)Não informado. University of Iowa Studies in Sociology, Economics, Politics and History. University of Iowa, 2000.
Precaución: Estas citas no son 100% exactas.