APA (7th ed.) Citation

Philippines. Mapping and Resource Information Authority. (1990). Province of Isabela (Ed. 1, May, 1990.). National Mapping and Resource Information.

Chicago Style (17th ed.) Citation

Philippines. Mapping and Resource Information Authority. Province of Isabela. Ed. 1, May, 1990. Makati, Metro Manila: National Mapping and Resource Information, 1990.

MLA (9th ed.) Citation

Philippines. Mapping and Resource Information Authority. Province of Isabela. Ed. 1, May, 1990. National Mapping and Resource Information, 1990.

Warning: These citations may not always be 100% accurate.