National Economic and Development Authority. (1998). The Philippine national development plan: Directions for the 21st century. [s.n.].
芝加哥风格引文National Economic and Development Authority. The Philippine National Development Plan: Directions for the 21st Century. [s.l.]: [s.n.], 1998.
MLA引文National Economic and Development Authority. The Philippine National Development Plan: Directions for the 21st Century. [s.n.], 1998.
警告：这些引文格式不一定是100％准确.