Citazione Stile APA (7a Edizione)

Vass, B., Alderdice, R., & Sled, G. (1982). Countdown Canada: A conceptual geography study. Gage.

Citazione stile Chigago Style (17a edizione)

Vass, Ben, Roy Alderdice, e George Sled. Countdown Canada: A Conceptual Geography Study. Toronto, Ont: Gage, 1982.

Citatione MLA (9a ed.)

Vass, Ben, et al. Countdown Canada: A Conceptual Geography Study. Gage, 1982.