Não informado. Extension circular. New Mexico College of Agriculture and Mechanic Arts.
Chicago-referens (17:e uppl.)Não informado. Extension Circular. Santa Fe, NM: New Mexico College of Agriculture and Mechanic Arts.
MLA-referens (8:e uppl.)Não informado. Extension Circular. New Mexico College of Agriculture and Mechanic Arts.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.