Packard, F. R. (1938). Some account of the Pennsylvania Hospital: From its first rise to the beginning of the year, 1938. Engle Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPackard, Francis R. Some Account of the Pennsylvania Hospital: From Its First Rise to the Beginning of the Year, 1938. Philadelphia: Engle Press, 1938.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPackard, Francis R. Some Account of the Pennsylvania Hospital: From Its First Rise to the Beginning of the Year, 1938. Engle Press, 1938.
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