Smith, W. R. (2008). Trees and shrubs of Minnesota: The complete guide to species identification. University of Minnesota Press.
Chicago-Zitierstil (17. Ausg.)Smith, Welby R. Trees and Shrubs of Minnesota: The Complete Guide to Species Identification. Minneapolis, MN: University of Minnesota Press, 2008.
MLA-Zitierstil (9. Ausg.)Smith, Welby R. Trees and Shrubs of Minnesota: The Complete Guide to Species Identification. University of Minnesota Press, 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.