APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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