Cita APA (7th ed.)
Gordon, R. L. (1981). An Economic Analysis of World Energy Problems. Massachusetts Institute of Technology.
Cita Chicago (17th ed.)
Gordon, Richard L. An Economic Analysis of World Energy Problems. Cambridge, EUA: Massachusetts Institute of Technology, 1981.
Cita MLA (9th ed.)
Gordon, Richard L. An Economic Analysis of World Energy Problems. Massachusetts Institute of Technology, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.