Cooper, D. Y., III, & Ledger, M. A. (1990). Innovation and tradition at the University of Pennsylvania School of Medicine: An anecdotal journey. University of Pennsylvania Press.
Citace podle Chicago (17th ed.)Cooper, David Y., III, a Marshall A. Ledger. Innovation and Tradition at the University of Pennsylvania School of Medicine: An Anecdotal Journey. Philadelphia: University of Pennsylvania Press, 1990.
Citace podle MLA (9th ed.)Cooper, David Y., III, a Marshall A. Ledger. Innovation and Tradition at the University of Pennsylvania School of Medicine: An Anecdotal Journey. University of Pennsylvania Press, 1990.
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