Não informado. (2022). Research Report. Michigan State University, Agricultural Experiment Station.
Chicago-referens (17:e uppl.)Não informado. Research Report. East Lansing, Mich: Michigan State University, Agricultural Experiment Station, 2022.
MLA-referens (8:e uppl.)Não informado. Research Report. Michigan State University, Agricultural Experiment Station, 2022.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.