1. Arora G 1990.Social Structure and Fertility. New Delhi: National Book Organization.
2. Bhende AA (Ed.) 2003.Principles of Population Studies. Mumbai: Himalaya Publishing House.
3. Cochrane SH, Zachariah KC1983. Infant and Child Mortality as a Determinant of Fertility: The Policy Implications.Presented at the UN Export Group Meeting on Fertility in Delhi, India, January 5-11,1983. World Bank Staff Working Paper No. 556, P.31, Washington D.C.: UN.
4. Huber S, Bookstein FL, Martin F 2010. Socio-econom-ic status, education, and reproduction in modern women: An evolutionary perspective.Am J Human Biol, 22: 578–587.
5. Isiugo-Abanihe UC 2003.Male Role and Responsibility in Fertility and Reproductive Health in Nigeria. Ibadan: Print Marks Ventures.