Iowa. State University of Science and Technology, Ames. Center for Agricultural and Economic Development. (1965). Economic development of agriculture: The modernization of farming. Iowa State University Press.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Iowa. State University of Science and Technology, Ames. Center for Agricultural and Economic Development. Economic Development of Agriculture: The Modernization of Farming. Ames: Iowa State University Press, 1965.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)Iowa. State University of Science and Technology, Ames. Center for Agricultural and Economic Development. Economic Development of Agriculture: The Modernization of Farming. Iowa State University Press, 1965.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.