Population Center Foundation. Research Utilization Project of Out-of-School Population Education. (1977). Approaches in communicating population concepts to the out-of-school youth: State of the art and cases. Population Center Foundation.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Population Center Foundation. Research Utilization Project of Out-of-School Population Education. Approaches in Communicating Population Concepts to the Out-of-school Youth: State of the Art and Cases. Makati: Population Center Foundation, 1977.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)Population Center Foundation. Research Utilization Project of Out-of-School Population Education. Approaches in Communicating Population Concepts to the Out-of-school Youth: State of the Art and Cases. Population Center Foundation, 1977.