Philippines. National Economic and Development Authority. (1987). Ilocos Region mid-year regional development report, CY 1987. National Economic and Development Authority.
芝加哥风格引文Philippines. National Economic and Development Authority. Ilocos Region Mid-year Regional Development Report, CY 1987. San Fernando, La Union: National Economic and Development Authority, 1987.
MLA引文Philippines. National Economic and Development Authority. Ilocos Region Mid-year Regional Development Report, CY 1987. National Economic and Development Authority, 1987.
警告：这些引文格式不一定是100％准确.