Michigan State College. Cooperative Extension Service. (1925). Extension news. Michigan State College, Cooperative Extension Service.
Chicago-referens (17:e uppl.)Michigan State College. Cooperative Extension Service. Extension News. East Lansing, MI: Michigan State College, Cooperative Extension Service, 1925.
MLA-referens (8:e uppl.)Michigan State College. Cooperative Extension Service. Extension News. Michigan State College, Cooperative Extension Service, 1925.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.