Harper, M. S. (1991). Management and care of the elderly: Psychosocial perspectives. Sage Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHarper, Mary S. Management and Care of the Elderly: Psychosocial Perspectives. Newbury Park: Sage Publications, 1991.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHarper, Mary S. Management and Care of the Elderly: Psychosocial Perspectives. Sage Publications, 1991.
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