Não informado. (1972). Home garden's natural gardening magazine. Flower Growing Publishing.
Chicago-referens (17:e uppl.)Não informado. Home Garden's Natural Gardening Magazine. New York: Flower Growing Publishing, 1972.
MLA-referens (8:e uppl.)Não informado. Home Garden's Natural Gardening Magazine. Flower Growing Publishing, 1972.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.