Core, E. L. (1999). Woody plants in winter: A manual of common trees and shrubs in winter in the northeastern United States and southeastern Canada. West Virginia University Press.
Chicago-Zitierstil (17. Ausg.)Core, Earl Lemley. Woody Plants in Winter: A Manual of Common Trees and Shrubs in Winter in the Northeastern United States and Southeastern Canada. Morgantown: West Virginia University Press, 1999.
MLA-Zitierstil (9. Ausg.)Core, Earl Lemley. Woody Plants in Winter: A Manual of Common Trees and Shrubs in Winter in the Northeastern United States and Southeastern Canada. West Virginia University Press, 1999.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.