South Dakota State College of Agriculture and Mechanic Arts. Economics Department & South Dakota Agricultural Experiment Station. (1942). Agricultural economics pamphlet. Dept. of Agricultural Economics, Agricultural Experiment Station, South Dakota State College.
Čikaški stil citiranja (17. izdanje)South Dakota State College of Agriculture and Mechanic Arts. Economics Department i South Dakota Agricultural Experiment Station. Agricultural Economics Pamphlet. Brookings, S.D.: Dept. of Agricultural Economics, Agricultural Experiment Station, South Dakota State College, 1942.
MLA način citiranja (8. izdanje)South Dakota State College of Agriculture and Mechanic Arts. Economics Department i South Dakota Agricultural Experiment Station. Agricultural Economics Pamphlet. Dept. of Agricultural Economics, Agricultural Experiment Station, South Dakota State College, 1942.