International Congress for Energy and the Ecosystem University of North Dakota & 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. https://doi.org/10.1016/C2013-1-15199-4
Style de citation Chicago (17e éd.)International Congress for Energy and the Ecosystem University of North Dakota et 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. https://doi.org/10.1016/C2013-1-15199-4.
Style de citation MLA (9e éd.)International Congress for Energy and the Ecosystem University of North Dakota et 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. Pergamon Press, 1979. https://doi.org/10.1016/C2013-1-15199-4.