Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (8a ed.)

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