Philippines. National Mapping and Resource Information Authority. Puerto Princesa. National Mapping and Resource Information Authority, 1975.
芝加哥风格引文Philippines. National Mapping and Resource Information Authority. Puerto Princesa. Makati, Metro Manila: National Mapping and Resource Information Authority, 1975.
MLA引文Philippines. National Mapping and Resource Information Authority. Puerto Princesa. National Mapping and Resource Information Authority, 1975.
警告：这些引文格式不一定是100％准确.