1. Abel, E.K. 1991. “Who cares for the elderly? Public policy and the experiences of adult daughters”. Philadelphia: Temple University Press.
2. Abel, E.K. 2000. “Hearts of wisdom: American women caring for kin: 1850–1940”. Cambridge, MA: Harvard University Press.
3. Allport, G.W. 1958. “The nature of prejudice”. New York: Doubleday.
4. A Life-Span Developmental Perspective on Social Status and Health