Philippines. Mapping and Resource Information Authority. (1990). Province of Negros Occidental (Ed. 1, March, 1990.). National Mapping and Resource Information.
Chicago Style (17th ed.) CitationPhilippines. Mapping and Resource Information Authority. Province of Negros Occidental. Ed. 1, March, 1990. Makati, Metro Manila: National Mapping and Resource Information, 1990.
MLA (9th ed.) CitationPhilippines. Mapping and Resource Information Authority. Province of Negros Occidental. Ed. 1, March, 1990. National Mapping and Resource Information, 1990.
Warning: These citations may not always be 100% accurate.