South Dakota Agricultural Experiment Station. (1964). Economics pamphlet. Agricultural Experiment Station, South Dakota State University.
Chicago-Zitierstil (17. Ausg.)South Dakota Agricultural Experiment Station. Economics Pamphlet. Brookings, S.D.: Agricultural Experiment Station, South Dakota State University, 1964.
MLA-Zitierstil (8. Ausg.)South Dakota Agricultural Experiment Station. Economics Pamphlet. Agricultural Experiment Station, South Dakota State University, 1964.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.