APA (7th ed.) Citation

Holliday, B., & Christensen, O. (2003). To be a cowboy: Oliver Christensen's story. University of Calgary Press.

Chicago Style (17th ed.) Citation

Holliday, Barbara, and Oliver Christensen. To Be a Cowboy: Oliver Christensen's Story. Calgary, Alta.: University of Calgary Press, 2003.

MLA (8th ed.) Citation

Holliday, Barbara, and Oliver Christensen. To Be a Cowboy: Oliver Christensen's Story. University of Calgary Press, 2003.