Shigo, A. L., & Larson, E. v. H. (1969). A photo guide to the patterns of discoloration and decay in living northern hardwood trees. Northeastern Forest Experiment Station.
Chicago-Zitierstil (17. Ausg.)Shigo, Alex L., und Edwin van Horn Larson. A Photo Guide to the Patterns of Discoloration and Decay in Living Northern Hardwood Trees. Upper Darby, PA: Northeastern Forest Experiment Station, 1969.
MLA-Zitierstil (9. Ausg.)Shigo, Alex L., und Edwin van Horn Larson. A Photo Guide to the Patterns of Discoloration and Decay in Living Northern Hardwood Trees. Northeastern Forest Experiment Station, 1969.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.