Vale, T. R. (1982). Plants and people: Vegetation change in North America. Assoc. of American Geographers.
Chicago-Zitierstil (17. Ausg.)Vale, Thomas R. Plants and People: Vegetation Change in North America. Washington, DC: Assoc. of American Geographers, 1982.
MLA-Zitierstil (9. Ausg.)Vale, Thomas R. Plants and People: Vegetation Change in North America. Assoc. of American Geographers, 1982.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.