Barnea, J. (1975). The energy crisis and the future. United Nations Institute for Training and Research.
Cita Chicago (17th ed.)Barnea, Joseph. The Energy Crisis and the Future. New York: United Nations Institute for Training and Research, 1975.
Cita MLA (9th ed.)Barnea, Joseph. The Energy Crisis and the Future. United Nations Institute for Training and Research, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.