National Planning Association. (1966). National economic projections to 1976/77. [National Planning Association].
芝加哥风格引文National Planning Association. National Economic Projections to 1976/77. Washington, D.C: [National Planning Association], 1966.
MLA引文National Planning Association. National Economic Projections to 1976/77. [National Planning Association], 1966.
警告：这些引文格式不一定是100％准确.