The fourth congress of the international economic association & Machlup,Fritz. (1976). Economic integration: Worldwide, regional , sectoral : proceedings of the fourth congress of the international economic association held in Budapest, Hungary. Mac Millan.
استشهاد بنمط شيكاغوThe fourth congress of the international economic association و Machlup,Fritz. Economic Integration: Worldwide, Regional , Sectoral : Proceedings of the Fourth Congress of the International Economic Association Held in Budapest, Hungary. London: Mac Millan, 1976.
MLA استشهادThe fourth congress of the international economic association و Machlup,Fritz. Economic Integration: Worldwide, Regional , Sectoral : Proceedings of the Fourth Congress of the International Economic Association Held in Budapest, Hungary. Mac Millan, 1976.