Thompson, B. (1978). Syrup trees: The new way for a natural pure food ;box elder, big leaf, silver, red, black and sugar maples. Walnut press.
Chicago-Zitierstil (17. Ausg.)Thompson, Bruce. Syrup Trees: The New Way for a Natural Pure Food ;box Elder, Big Leaf, Silver, Red, Black and Sugar Maples. Fountain Hills,Ariz: Walnut press, 1978.
MLA-Zitierstil (9. Ausg.)Thompson, Bruce. Syrup Trees: The New Way for a Natural Pure Food ;box Elder, Big Leaf, Silver, Red, Black and Sugar Maples. Walnut press, 1978.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.