@mastersthesis {48,
	title = {The Legitimacy of Quercus ellipsoidalis Based on a Populational Study of Quercus coccinea in Illinois},
	year = {1993},
	month = {1993},
	pages = {168},
	school = {Western Illinois UniversityEditor},
	type = {masters},
	author = {Shepard, D.A.}
}
@article {55,
	title = {The occurrence of the scarlet oak, Quercus coccinea in northern Illinois},
	journal = {Transactions of the Illinois State Academy of Science},
	volume = {84 (Suppl. 35) (Abstract).},
	year = {1991},
	month = {1991},
	author = {Shepard, D.A.}
}
@article {106,
	title = {A review of the taxonomic status of Quercus ellipsoidalis and Quercus coccinea in the Eastern United States},
	journal = {International Oak Journal},
	volume = {20},
	year = {2009},
	month = {2009},
	pages = {65-84},
	author = {Shepard, D.A.}
}
