United States. Congress. Senate. Special Committee on Aging, American Association of Retired Persons, Federal Council on the Aging (U.S.), & U.S. Administration on Aging. (1991). Aging America: Trends and projections : 1991 edition (1991 edition.). U.S. Department of Health and Human Sevices.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited States. Congress. Senate. Special Committee on Aging, American Association of Retired Persons, Federal Council on the Aging (U.S.), और U.S. Administration on Aging. Aging America: Trends and Projections : 1991 Edition. 1991 edition. Washington: U.S. Department of Health and Human Sevices, 1991.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnited States. Congress. Senate. Special Committee on Aging, et al. Aging America: Trends and Projections : 1991 Edition. 1991 edition. U.S. Department of Health and Human Sevices, 1991.