Epstein, A. (1972). Facing old age: A study of old age dependency in the United States and old age pensions. Arno Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEpstein, Abraham. Facing Old Age: A Study of Old Age Dependency in the United States and Old Age Pensions. New York: Arno Press, 1972.
एमएलए (8वां संस्करण) प्रशस्ति पत्रEpstein, Abraham. Facing Old Age: A Study of Old Age Dependency in the United States and Old Age Pensions. Arno Press, 1972.
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