found:Map of Occidental Mindoro, 1975map recto (Mamburao)
found:GEOnet, May 18, 2005(Mamburao, PPL, 13°13ʹ41ʺN, 120°35ʹ37ʺE)
found:Columbia gaz. website, May 18, 2005(Mamburao, town, Mindoro Occidental prov., W Mindoro, Philippines, 47 mi/75 km SE of Batangas, 13°15ʹN, 120°40ʹE)