Não informado. (1931). American Fruit Grower. American Fruit Grower Publishing.
Chicago-Zitierstil (17. Ausg.)Não informado. American Fruit Grower. Willoughby, Ohio: American Fruit Grower Publishing, 1931.
MLA-Zitierstil (8. Ausg.)Não informado. American Fruit Grower. American Fruit Grower Publishing, 1931.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.