Zamboanga del Norte (Province) Provincial Development Staff. (1975). Five year development program, 1976-1980 Comprehensive plan: Province of Zamboanga del Norte. s.n.
芝加哥风格引文Zamboanga del Norte (Province) Provincial Development Staff. Five Year Development Program, 1976-1980 Comprehensive Plan: Province of Zamboanga Del Norte. [S.l: s.n, 1975.
MLA引文Zamboanga del Norte (Province) Provincial Development Staff. Five Year Development Program, 1976-1980 Comprehensive Plan: Province of Zamboanga Del Norte. s.n, 1975.
警告：这些引文格式不一定是100％准确.