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.
Παραπομπή σε μορφή Chicago (17η εκδ.)United States. Congress. Senate. Special Committee on Aging, American Association of Retired Persons, Federal Council on the Aging (U.S.), και U.S. Administration on Aging. Aging America: Trends and Projections : 1991 Edition. 1991 edition. Washington: U.S. Department of Health and Human Sevices, 1991.
Παραπομπή σε μορφή MLA (9th εκδ.)United 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.