OfficialGazette of the Republic of the Philippines. Malacañang Records Office. 28 September 2015閲覧。 ^ “Executive Order 984, s. 1984”. The Official Gazette
“COMELEC to conduct plebiscite for the creation of Davao Occidental”. OfficialGazette. COMELEC (September 18, 2013). 7 November 2013閲覧。 ^ Carillo, C.A. (10