Não informado. Handbook of International Trade Development Statistics. United Nations Conference on Trade and Development.
Chicago-Zitierstil (17. Ausg.)Não informado. Handbook of International Trade Development Statistics. Geneva, Suíça: United Nations Conference on Trade and Development.
MLA-Zitierstil (8. Ausg.)Não informado. Handbook of International Trade Development Statistics. United Nations Conference on Trade and Development.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.