APA (7. basım) Alıntı

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

Chicago Style (17. basım) Atıf

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

MLA (9th ed.) Atıf

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