Northern Alberta Dairy Pool, Alberta Co-operative Dairy Producers, Alberta Dairymen's Association. Producers Section, & Cowbell Institute. (1927). The Cow bell. Alberta Co-operative Dairy Producers.
Chicago-referens (17:e uppl.)Northern Alberta Dairy Pool, Alberta Co-operative Dairy Producers, Alberta Dairymen's Association. Producers Section, och Cowbell Institute. The Cow Bell. Edmonton, Alta.: Alberta Co-operative Dairy Producers, 1927.
MLA-referens (8:e uppl.)Northern Alberta Dairy Pool, et al. The Cow Bell. Alberta Co-operative Dairy Producers, 1927.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.