Population Center Foundation. Population Information Division. (1988). Union catalog of population literature in Philippine libraries. Population Center Foundation.
Citace podle Chicago (17th ed.)Population Center Foundation. Population Information Division. Union Catalog of Population Literature in Philippine Libraries. Makati, Metro Manila: Population Center Foundation, 1988.
Citace podle MLA (9th ed.)Population Center Foundation. Population Information Division. Union Catalog of Population Literature in Philippine Libraries. Population Center Foundation, 1988.
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