Παραπομπή σε μορφή APA (7η εκδ.)

Intal, P. S. (1989). Population, welfare, and rural development. Population/Development Planning and Research Project, National Economic and Development Authority.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Intal, Ponciano S. Population, Welfare, and Rural Development. [Manila]: Population/Development Planning and Research Project, National Economic and Development Authority, 1989.

Παραπομπή σε μορφή MLA (9th εκδ.)

Intal, Ponciano S. Population, Welfare, and Rural Development. Population/Development Planning and Research Project, National Economic and Development Authority, 1989.