Population Center Foundation Information Division. (1979). Union catalog of population literature in Philippine libraries. s.n.
Citazione stile Chigago Style (17a edizione)Population Center Foundation Information Division. Union Catalog of Population Literature in Philippine Libraries. Makati: s.n, 1979.
Citatione MLA (9a ed.)Population Center Foundation Information Division. Union Catalog of Population Literature in Philippine Libraries. s.n, 1979.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.