Silwamba, M., C. Mwimba, and P. Hangoma. “Willingness to Pay For National Health Insurance Among Informal Sector Workers A Case Study of Kazungula Rural District of Zambia”. Journal of Policy and Planning, vol. 2, no. 1, Nov. 2025, pp. 21-37, doi:10.54536/jpp.v2i1.5025.