United States. Congress. Senate. Committee on Foreign Relations. Subcommittee on International Economic Policy & ProQuest (Firm). (1981). International coal trade: Hearings before the Subcommittee on International Economic Policy of the Committee on Foreign Relations, United States Senate, Ninety-seventh Congress, first session, on U.S. competitiveness in international coal trade, April 28, 1981. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. Senate. Committee on Foreign Relations. Subcommittee on International Economic Policy and ProQuest (Firm). International Coal Trade: Hearings Before the Subcommittee on International Economic Policy of the Committee on Foreign Relations, United States Senate, Ninety-seventh Congress, First Session, on U.S. Competitiveness in International Coal Trade, April 28, 1981. Washington: U.S. G.P.O., 1981.
MLA (9th ed.) CitationUnited States. Congress. Senate. Committee on Foreign Relations. Subcommittee on International Economic Policy and ProQuest (Firm). International Coal Trade: Hearings Before the Subcommittee on International Economic Policy of the Committee on Foreign Relations, United States Senate, Ninety-seventh Congress, First Session, on U.S. Competitiveness in International Coal Trade, April 28, 1981. U.S. G.P.O., 1981.