1. Arnold, F., Bulatao, R. A., Buripakdi, C., Chung, B. J., Fawcett, J. T., Iritani, T., et al. (1975). The value of children: A cross-national study. Honolulu: East-West Center.
2. Beck, U. (1992). Risk Society: Towards a New Modernity: Sage publication.
3. Becker, G. S. (1960). An economic analysis of fertility. In Demographic and economic change in developed countries (pp. 209-240): Columbia University press.
4. Becker, G. S., & Barro, R. J. (1988). A reformulation of the economic theory of fertility. The Quarterly Journal of Economics, 103(1), 1–25.
5. Bulatao, R. A. (1984). Reducing fertility in developing countries. A review of determinants and policy levers. World Bank staff working papers 680. Washington, D.C.: International Bank for Reconstruction and Development.