Cita APA (7th ed.)

Sewell, W. R. D., & Foster, H. D. (1976). Images of Canadian futures: The role of conservation and renewable energy. Environment Canada.

Cita Chicago (17th ed.)

Sewell, W. R. Derrick, i Harold D. Foster. Images of Canadian Futures: The Role of Conservation and Renewable Energy. Ottawa: Environment Canada, 1976.

Cita MLA (8th ed.)

Sewell, W. R. Derrick, i Harold D. Foster. Images of Canadian Futures: The Role of Conservation and Renewable Energy. Environment Canada, 1976.