horn, k. h. (1967). structural changes and productivity. the institute of national planning.
Citazione stile Chigago Style (17a edizione)horn, karl heinz. Structural Changes and Productivity. cairo: the institute of national planning, 1967.
Citatione MLA (9a ed.)horn, karl heinz. Structural Changes and Productivity. the institute of national planning, 1967.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.