Efford, I. E., & Smith, B. M. (1972). Energy and the environment. Institute of Resource Ecology, University of British Columbia.
Chicago Style (17. basım) AtıfEfford, Ian E., ve Barbara M. Smith. Energy and the Environment. Vancouver: Institute of Resource Ecology, University of British Columbia, 1972.
MLA (9th ed.) AtıfEfford, Ian E., ve Barbara M. Smith. Energy and the Environment. Institute of Resource Ecology, University of British Columbia, 1972.
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