1Perterson, D. A. (1983) , Facilitating Education for Older Learners, (San Francisco, CA :Jossey ' Bass).
2Glass, J. C. Jr. (1996), " Factors affecting learning in older adult" , Educational Gerontology, 22, 359 - 372.
3Staudinger, U. M. and Batles, P.B. (1996) , "Interactive minds: A facilitative setting for wisdom -related performance" , Journal of Personality and Social psychology, 71, 746-762.