APA-referens (7:e uppl.)

Não informado. (1949). South Dakota Farm & Home Research. South Dakota Agricultural Experiment Station.

Chicago-referens (17:e uppl.)

Não informado. South Dakota Farm & Home Research. Brookings, SD: South Dakota Agricultural Experiment Station, 1949.

MLA-referens (8:e uppl.)

Não informado. South Dakota Farm & Home Research. South Dakota Agricultural Experiment Station, 1949.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.