Philippine Columbian Association. (1988). Catalogue of books in the library, as of September 30, 1988. Philippine Columbian Association.
Čikaški stil citiranja (17. izdanje)Philippine Columbian Association. Catalogue of Books in the Library, as of September 30, 1988. Manila: Philippine Columbian Association, 1988.
MLA način citiranja (9. izdanje)Philippine Columbian Association. Catalogue of Books in the Library, as of September 30, 1988. Philippine Columbian Association, 1988.
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