horn, k. h. (1967). structural changes and productivity. the institute of national planning.
芝加哥风格引文horn, karl heinz. Structural Changes and Productivity. cairo: the institute of national planning, 1967.
MLA引文horn, karl heinz. Structural Changes and Productivity. the institute of national planning, 1967.
警告：这些引文格式不一定是100％准确.