APA (7th ed.) Citation

Vass, B., Alderdice, R., & Sled, G. (1979). Countdown Canada: A conceptual geography study. Macmillan of Canada.

Chicago Style (17th ed.) Citation

Vass, Ben, Roy Alderdice, and George Sled. Countdown Canada: A Conceptual Geography Study. Toronto, Ont: Macmillan of Canada, 1979.

MLA (9th ed.) Citation

Vass, Ben, et al. Countdown Canada: A Conceptual Geography Study. Macmillan of Canada, 1979.