United Nations. Economic Commission for Europe. (1970). The future role of coal in the national and world economies (Conference) 1969, Warsaw : Report of the Symposium ...: Report of the Symposium ... United Nations.
Chicago Style (17th ed.) CitationUnited Nations. Economic Commission for Europe. The Future Role of Coal in the National and World Economies (Conference) 1969, Warsaw : Report of the Symposium ...: Report of the Symposium ... United Nations, 1970.
MLA (9th ed.) CitationUnited Nations. Economic Commission for Europe. The Future Role of Coal in the National and World Economies (Conference) 1969, Warsaw : Report of the Symposium ...: Report of the Symposium ... United Nations, 1970.
Warning: These citations may not always be 100% accurate.