Philippines (Republic). Office of the President & Presidential Economic Staff. (1969). Provincial profile of Zamboanga del Norte. s.n.
Chicago-Zitierstil (17. Ausg.)Philippines (Republic). Office of the President und Presidential Economic Staff. Provincial Profile of Zamboanga Del Norte. [Manila: s.n, 1969.
MLA-Zitierstil (9. Ausg.)Philippines (Republic). Office of the President und Presidential Economic Staff. Provincial Profile of Zamboanga Del Norte. s.n, 1969.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.