Philippines (Republic). Bureau of the Census and Statistics. (1970). Listing of cities, municipalities and municipal districts by province as of Jan. 1, 1970. The Bureau.
Cita Chicago (17th ed.)Philippines (Republic). Bureau of the Census and Statistics. Listing of Cities, Municipalities and Municipal Districts by Province as of Jan. 1, 1970. Manila: The Bureau, 1970.
Cita MLA (9th ed.)Philippines (Republic). Bureau of the Census and Statistics. Listing of Cities, Municipalities and Municipal Districts by Province as of Jan. 1, 1970. The Bureau, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.