(1961). Pugo, Phils. Board of Technical Surveys and Maps.
Cita Chicago Style (17a ed.)Pugo, Phils. Manila: Board of Technical Surveys and Maps, 1961.
Cita MLA (9a ed.)Pugo, Phils. Board of Technical Surveys and Maps, 1961.
Precaución: Estas citas no son 100% exactas.