APA (7th ed.) Citation

Helliwell, J. F. (1989). Oil and gas in Canada: The effects of domestic policies and world events. Canadian Tax Foundation.

Chicago Style (17th ed.) Citation

Helliwell, John F. Oil and Gas in Canada: The Effects of Domestic Policies and World Events. Toronto, Ont.: Canadian Tax Foundation, 1989.

MLA (9th ed.) Citation

Helliwell, John F. Oil and Gas in Canada: The Effects of Domestic Policies and World Events. Canadian Tax Foundation, 1989.