BurgessErnest W., ED., Aging in Western Societies. University of Chicago Press.
2.
BurgessErnest W. PH.D., “Retirement Preparation, Chicago Plan,” Case Study #5, Patterns for Progress in Aging. U.S. Dept. HEW, June, 1961.
3.
FlintHelen M., and RubigTed, “Planning for Retirement—A University Labor Union Program,” Case Study #16, Patterns for Progress in Aging. U.S. Dept. HEW, 1964.
4.
SchultzE. B., “The TVA Pre-retirement Program,” Case Study #9, Patterns for Progress in Aging. U.S. Dept. HEW, June, 1961.
5.
TibbitsClash ED. Handbook of Social Gerontology. University of Chicago Press, 1960.
6.
U.S. DEPT. HEW, Soc. SEC. ADMIN., Planning for the Later Years.