South Dakota Agricultural Experiment Station. (1939). Technical bulletin. Agricultural Experiment Station, South Dakota State College of Agriculture and Mechanical Arts.
Čikaški stil citiranja (17. izdanje)South Dakota Agricultural Experiment Station. Technical Bulletin. Brookings, S.D.: Agricultural Experiment Station, South Dakota State College of Agriculture and Mechanical Arts, 1939.
MLA način citiranja (8. izdanje)South Dakota Agricultural Experiment Station. Technical Bulletin. Agricultural Experiment Station, South Dakota State College of Agriculture and Mechanical Arts, 1939.
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