(1999). United Nations conference on trade and development: Handbook of world mineral trade statistics 1991 - 1996. New York: United Nations.
استشهاد بنمط شيكاغوUnited Nations Conference On Trade and Development: Handbook of World Mineral Trade Statistics 1991 - 1996. New York: United Nations, 1999.
MLA استشهادUnited Nations Conference On Trade and Development: Handbook of World Mineral Trade Statistics 1991 - 1996. New York: United Nations, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.