Keith, J. (1982). Old people as people: Social and cultural influences on againg and old age. Little, Brown.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKeith, Jennie. Old People as People: Social and Cultural Influences on Againg and Old Age. Little, Brown, 1982.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKeith, Jennie. Old People as People: Social and Cultural Influences on Againg and Old Age. Little, Brown, 1982.
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