International Congress for Energy and the Ecosystem University of North Dakota, ScienceDirect (Online service), & Wali, M. K. (1979). Ecology and coal resource development: Based on the International Congress for Energy and the Ecosystem, held at the University of North Dakota, Grand Forks, North Dakota, 12-16 June, 1978. Pergamon Press.
Chicago Style (17th ed.) CitationInternational Congress for Energy and the Ecosystem University of North Dakota, ScienceDirect (Online service), and Mohan K. Wali. Ecology and Coal Resource Development: Based on the International Congress for Energy and the Ecosystem, Held at the University of North Dakota, Grand Forks, North Dakota, 12-16 June, 1978. New York: Pergamon Press, 1979.
MLA (9th ed.) CitationInternational Congress for Energy and the Ecosystem University of North Dakota, et al. Ecology and Coal Resource Development: Based on the International Congress for Energy and the Ecosystem, Held at the University of North Dakota, Grand Forks, North Dakota, 12-16 June, 1978. Pergamon Press, 1979.