Cita APA

Efford, I. E., & Smith, B. M. (1972). Energy and the environment. Institute of Resource Ecology, University of British Columbia.

Citación estilo Chicago

Efford, Ian E., and Barbara M. Smith. Energy and the Environment. Vancouver: Institute of Resource Ecology, University of British Columbia, 1972.

Cita MLA

Efford, Ian E., and Barbara M. Smith. Energy and the Environment. Institute of Resource Ecology, University of British Columbia, 1972.