1. Akter, S. (2008). Determinants of willingness to pay for safe drinking water: A case study in Bangladesh. Asian Journal of Water, Environment and Pollution, 5(3), 85–91.
2. Alderman, H., & Gertler, P. (1989). The substitutability of public and private health care for the treatment of children in Pakistan (LSMS Working Paper No. 57). Washington, DC: World Bank.
3. Alpizar, F., Carlsson, F., & Martinsson, P. (2003). Using choice experiments for nonmarket valuation. Economic Issues-Stoke on Trent, 8(1), 83–110.
4. Amaghionyeodiwe, L. A. (2008). Determinants of the choice of health care provider in nigeria. Health Care Management Science, 11, 215–227.
5. Ayifah, E. (2010). Determinants of the willingness-to-pay for HIV/AIDS prevention: The case of mother-to-child transmission in selected hospitals in Ghana. Retrovirology, 7(Suppl. 1), P137.