1. Birren, J. E. and Renner, N. J.: Research on psychology of aging: Principles and experimentation. pp. 459-463. In: Community Mental Halth. J. E. Birsen and K. W. Schaic (Eds). Proceedings of the Indo US. Symposium on Community Mental Health., NIMHANS, Bangalore (1977)
2. Chaube, S.P. Developmental Psychology. Neelkamal Publications, New Delhi (2003).
3. Chowdhry, D. Paul: Aging and the Aged. Inter-India Publications, New Delhi (1992).
4. Dandekar, K. The Elderly in India. Sage Publication, New Delhi (1992).
5. Dhillon, P.K. Psychosocial Aspects of Aging in India. Concept Publishing Company, New Delhi (1992).