Iowa State University. Cooperative Extension Service, Iowa Farm Business Association, & United States. Department of Agriculture. (1934). Iowa farm outlook. Cooperative Extension Service, Iowa State University of Science and Technology.
Chicagoスタイル(17版)引用形式Iowa State University. Cooperative Extension Service, Iowa Farm Business Association, , United States. Department of Agriculture. Iowa Farm Outlook. Ames (Iowa): Cooperative Extension Service, Iowa State University of Science and Technology, 1934.
MLA(8版)引用形式Iowa State University. Cooperative Extension Service, et al. Iowa Farm Outlook. Cooperative Extension Service, Iowa State University of Science and Technology, 1934.
警告: この引用は必ずしも正確ではありません.