Philippines. National Mapping & Resource Information Authority. Laoag. National Mapping & Resource Information Authority, 1990.
Chicagoスタイル(17版)引用形式Philippines. National Mapping & Resource Information Authority. Laoag. Makati, Metro Manila: National Mapping & Resource Information Authority, 1990.
MLA(9版)引用形式Philippines. National Mapping & Resource Information Authority. Laoag. National Mapping & Resource Information Authority, 1990.
警告: この引用は必ずしも正確ではありません.