Não informado. (1912). Inventory of seeds and plants imported. Bureau of Plant Industry, Soils and Agricultural Engineering.
Chicago-Zitierstil (17. Ausg.)Não informado. Inventory of Seeds and Plants Imported. Washington: Bureau of Plant Industry, Soils and Agricultural Engineering, 1912.
MLA-Zitierstil (8. Ausg.)Não informado. Inventory of Seeds and Plants Imported. Bureau of Plant Industry, Soils and Agricultural Engineering, 1912.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.