Não informado. (1949). Progressive agriculture in Arizona. University of Arizona, College of Agriculture.
Cita Chicago Style (17a ed.)Não informado. Progressive Agriculture in Arizona. Tucson, Ariz: University of Arizona, College of Agriculture, 1949.
Cita MLA (8a ed.)Não informado. Progressive Agriculture in Arizona. University of Arizona, College of Agriculture, 1949.
Precaución: Estas citas no son 100% exactas.