Ching, P. (1992). Factors affecting the demand for health services in the Philippines. Philippine Institute for Development Studies.
Chicago-viite (17. p.)Ching, Panfila. Factors Affecting the Demand for Health Services in the Philippines. Makati: Philippine Institute for Development Studies, 1992.
MLA-viite (9. p.)Ching, Panfila. Factors Affecting the Demand for Health Services in the Philippines. Philippine Institute for Development Studies, 1992.
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