APA-referens (7:e uppl.)
McNeil, G. R. (1983). Groundwork: Charles Hamilton Houston and the struggle for civil rights. University of Pennsylvania Press.
Chicago-referens (17:e uppl.)
McNeil, Genna Rae. Groundwork: Charles Hamilton Houston and the Struggle for Civil Rights. Philadelphia: University of Pennsylvania Press, 1983.
MLA-referens (9:e uppl.)
McNeil, Genna Rae. Groundwork: Charles Hamilton Houston and the Struggle for Civil Rights. University of Pennsylvania Press, 1983.
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