Humphrey, C. R., Lewis, T. L., & Buttel, F. H. (2003). Environment, energy, and society: Exemplary works. Wadsworth Thomson Learning.
Chicago Style (17th ed.) ZitazioaHumphrey, Craig R., Tammy L. Lewis, eta Frederick H. Buttel. Environment, Energy, and Society: Exemplary Works. Australia: Wadsworth Thomson Learning, 2003.
MLA (9th ed.) ZitazioaHumphrey, Craig R., et al. Environment, Energy, and Society: Exemplary Works. Wadsworth Thomson Learning, 2003.
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