APA
United Nations Conference on Trade and Development (Geneva), . (1997). Handbook of world mineral trade statistics 1991-96. New York: United Nations.
Chicago
United Nations Conference on Trade and Development (Geneva), . 1997. Handbook of world mineral trade statistics 1991-96. New York: United Nations.
Harvard
United Nations Conference on Trade and Development (Geneva), . (1997). Handbook of world mineral trade statistics 1991-96. New York: United Nations.
MLA
United Nations Conference on Trade and Development (Geneva), . Handbook of world mineral trade statistics 1991-96. New York: United Nations. 1997.