Iowa State University. Center for Agricultural and Economic Development. (1965). Economic development of agriculture: The modernization of farming ([1st ed.].). Iowa State University Press.
Lua i Stíl Chicago (17ú heag.)Iowa State University. Center for Agricultural and Economic Development. Economic Development of Agriculture: The Modernization of Farming. [1st ed.]. Ames: Iowa State University Press, 1965.
Lua MLA (9ú heag.)Iowa State University. Center for Agricultural and Economic Development. Economic Development of Agriculture: The Modernization of Farming. [1st ed.]. Iowa State University Press, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.