United States. National Geospatial-Intelligence Agency. (2004). Philippines: Historical map. National Geospatial-Intelligence Agency.
Chicago Style (17th ed.) CitationUnited States. National Geospatial-Intelligence Agency. Philippines: Historical Map. [Washington, D.C.]: National Geospatial-Intelligence Agency, 2004.
MLA (9th ed.) CitationUnited States. National Geospatial-Intelligence Agency. Philippines: Historical Map. National Geospatial-Intelligence Agency, 2004.
Warning: These citations may not always be 100% accurate.