APA (7th ed.) Citation

Dobson, F. R., & Virgo, H. E. (1974). Canada and the United States. English Universities Press Limited.

Chicago Style (17th ed.) Citation

Dobson, F. R., and H. E. Virgo. Canada and the United States. London: English Universities Press Limited, 1974.

MLA (9th ed.) Citation

Dobson, F. R., and H. E. Virgo. Canada and the United States. English Universities Press Limited, 1974.