Joseph G E. Hopkins. (1964). Concise dictionary of American biography. New York: Charles Scribner.
Trích dẫn kiểu ChicagoJoseph G E. Hopkins. Concise Dictionary of American Biography. New York: Charles Scribner, 1964.
Deismireacht MLAJoseph G E. Hopkins. Concise Dictionary of American Biography. New York: Charles Scribner, 1964.
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