APA (7th ed.) Citation

Philippines. National Mapping & Resource Information Authority. Laoag. National Mapping & Resource Information Authority, 1990.

Chicago Style (17th ed.) Citation

Philippines. National Mapping & Resource Information Authority. Laoag. Makati, Metro Manila: National Mapping & Resource Information Authority, 1990.

MLA (9th ed.) Citation

Philippines. National Mapping & Resource Information Authority. Laoag. National Mapping & Resource Information Authority, 1990.

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