Philippines (Republic). Office of the President & Presidential Economic Staff. (1969). Provincial profile of Zamboanga del Norte. s.n.
Chicago Style (17th ed.) CitationPhilippines (Republic). Office of the President and Presidential Economic Staff. Provincial Profile of Zamboanga Del Norte. [Manila: s.n, 1969.
MLA (9th ed.) CitationPhilippines (Republic). Office of the President and Presidential Economic Staff. Provincial Profile of Zamboanga Del Norte. s.n, 1969.
Warning: These citations may not always be 100% accurate.