Philippines. National Economic and Development Authority & Population/Development Planning and Research Project (Philippines). (1983). An introductory guide to population and development planning. Population/Development Planning and Research Project, National Economic and Development Authority.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippines. National Economic and Development Authority و Population/Development Planning and Research Project (Philippines). An Introductory Guide to Population and Development Planning. [Manila]: Population/Development Planning and Research Project, National Economic and Development Authority, 1983.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippines. National Economic and Development Authority و Population/Development Planning and Research Project (Philippines). An Introductory Guide to Population and Development Planning. Population/Development Planning and Research Project, National Economic and Development Authority, 1983.