Bulcroft, K., Bulcroft R., Hatch L., & Borgatta E. 1989. Antecedents and Consequences of Remarriage In Later Life. Research on Aging, 11(1), 82-106.

De Beauvoir, Simone. 1977. Joie De Vivre (from the Coming of Age),
Readings in Adults Psychology Contemporary
. Harper & Row Publishers Inc:
New York.

Feldman, Robert S. 2006. Life Expectancy At Birth (Number of Years. Prentice Hall: United States.

New Straits Times. 2/5/2006. Men Living Longer, But Spent Latter years Sick.
Kuala Lumpur.
New Straits Times. 9/4/2006. Only Nine Doctors for Elderly care.
Kuala Lumpur

Rogers, Dorothy. 1979. The Adult Years. Prentice-Hall: Englewood Cliffs,
New Jersey.
Troll, Lillian E. Continuations: Adult Development and Aging. Brooks/Cole Publishing Company: Monterey California.