Belcher, D. R. (1960). The Board of Trustees of the University of Pennsylvania. Pennsylvania U.P..
Cita Chicago (17th ed.)Belcher, Donald Ray. The Board of Trustees of the University of Pennsylvania. Philad.: Pennsylvania U.P., 1960.
Cita MLA (8th ed.)Belcher, Donald Ray. The Board of Trustees of the University of Pennsylvania. Pennsylvania U.P., 1960.
Atenció: Aquestes cites poden no estar 100% correctes.