horn, k. h. (1967). structural changes and productivity. the institute of national planning.
Chicagoスタイル(17版)引用形式horn, karl heinz. Structural Changes and Productivity. cairo: the institute of national planning, 1967.
MLA(9版)引用形式horn, karl heinz. Structural Changes and Productivity. the institute of national planning, 1967.
警告: この引用は必ずしも正確ではありません.