1. Albert, S. M., Litvin, S. J., Kleban, M. H., & Brody, E. M. (1991). Caregiving daughters perspectives of their own and their mothers’ personalities. The Gerontologist, 31(4), 476–483.
2. Baltes, P. B., & Mayer, K. U. (1999). The Berlin aging study: Aging from 70 to 100. Cambridge University Press.
3. Borchelt, M., Gilberg, R., Horgas, A. I., & Geiselmann, B. (1999). On the significance. Of morbidity and disability in old age. In P. B. Baltes, K. U. Mayer (Eds.), The Berlin aging study: Aging from.70 to 100, 403–429. Cambridge University Press.
4. Breines, W. (1992). Young, white, and miserable: Growing up female in the fifties. Boston: Beacon Press.
5. Cantor, D. L. (2001). Sources of generativity in older women: A Life-span developmental perspective. An unpublished dissertation.