Não informado. (1914). Annual report of the Iowa Agricultural Experiment Station. Iowa State College of Agriculture and Mechanic Arts.
Chicago-Zitierstil (17. Ausg.)Não informado. Annual Report of the Iowa Agricultural Experiment Station. Ames, Iowa: Iowa State College of Agriculture and Mechanic Arts, 1914.
MLA-Zitierstil (8. Ausg.)Não informado. Annual Report of the Iowa Agricultural Experiment Station. Iowa State College of Agriculture and Mechanic Arts, 1914.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.