APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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