Atchley, R. C. (1977). The social forces in later life: An introduction to social gerontology (2d ed.). Wadsworth Pub. Co..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAtchley, Robert C. The Social Forces in Later Life: An Introduction to Social Gerontology. 2d ed. Belmont, Calif.: Wadsworth Pub. Co., 1977.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAtchley, Robert C. The Social Forces in Later Life: An Introduction to Social Gerontology. 2d ed. Wadsworth Pub. Co., 1977.
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