Philippines (Republic) National Library. Bibliography Division. (1971). A Guide to the map collection of the Filipiniana Division.
芝加哥风格引文Philippines (Republic) National Library. Bibliography Division. A Guide to the Map Collection of the Filipiniana Division. Manila, 1971.
MLA引文Philippines (Republic) National Library. Bibliography Division. A Guide to the Map Collection of the Filipiniana Division. 1971.
警告：这些引文格式不一定是100％准确.