frisch, r. (1963). investment requirements under a given time shape of current final demand. National Planning Institute.
芝加哥风格引文frisch, ragnar. Investment Requirements Under a Given Time Shape of Current Final Demand. cairo: National Planning Institute, 1963.
MLA引文frisch, ragnar. Investment Requirements Under a Given Time Shape of Current Final Demand. National Planning Institute, 1963.
警告：这些引文格式不一定是100％准确.