Little, E. L., & Honkala, B. H. (1976). Trees and shrubs of the United States: A bibliography for identification. Forest Service, US Dept. of Agriculture.
Chicago-Zitierstil (17. Ausg.)Little, Elbert Luther, und Barbara H. Honkala. Trees and Shrubs of the United States: A Bibliography for Identification. Washington: Forest Service, US Dept. of Agriculture, 1976.
MLA-Zitierstil (9. Ausg.)Little, Elbert Luther, und Barbara H. Honkala. Trees and Shrubs of the United States: A Bibliography for Identification. Forest Service, US Dept. of Agriculture, 1976.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.