Finding Aid for the Michael Denis Cullen Papers. Marquette University. Department of Special Collections and University Archives.
Chicago-referens (17:e uppl.)Finding Aid for the Michael Denis Cullen Papers. Marquette University. Department of Special Collections and University Archives.
MLA-referens (8:e uppl.)Finding Aid for the Michael Denis Cullen Papers. Marquette University. Department of Special Collections and University Archives.
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