South Dakota Agricultural Experiment Station. (1939). Technical bulletin. Agricultural Experiment Station, South Dakota State College of Agriculture and Mechanical Arts.
Chicago-Zitierstil (17. Ausg.)South Dakota Agricultural Experiment Station. Technical Bulletin. Brookings, S.D.: Agricultural Experiment Station, South Dakota State College of Agriculture and Mechanical Arts, 1939.
MLA-Zitierstil (8. Ausg.)South Dakota Agricultural Experiment Station. Technical Bulletin. Agricultural Experiment Station, South Dakota State College of Agriculture and Mechanical Arts, 1939.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.