APA (7th ed.) Citation

Oppen, W. A. (1979). The Riel Rebellions, a cartographic history (Special ed.). University Press [etc.].

Chicago Style (17th ed.) Citation

Oppen, William A. The Riel Rebellions, a Cartographic History. Special ed. Toronto [etc.]: University Press [etc.], 1979.

MLA (9th ed.) Citation

Oppen, William A. The Riel Rebellions, a Cartographic History. Special ed. University Press [etc.], 1979.