Quercus engelmannii (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Quercus engelmannii" in English language version.

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berkeley.edu

Tucker, John M. (1993). "Quercus engelmannii". In Hickman, James C. (ed.). The Jepson Manual: Higher Plants of California. University and Jepson Herbaria.

Nixon, Kevin C. (1997). "Quercus engelmannii". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 3. New York and Oxford: Oxford University Press – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.