APA (7th ed.) Zitazioa

horn, k. h. (1967). structural changes and productivity. the institute of national planning.

Chicago Style (17th ed.) Zitazioa

horn, karl heinz. Structural Changes and Productivity. cairo: the institute of national planning, 1967.

MLA (9th ed.) Zitazioa

horn, karl heinz. Structural Changes and Productivity. the institute of national planning, 1967.

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