- ^ James M. Cahalan, Edward Abbey: A Life, University of Arizona Press, 2003. ISBN 978-0816522675.
- ^ "The Brave Cowboy Dale Brittain". www.youtube.com. Archived from the original on 2021-12-21. Retrieved 2021-01-23 – via YouTube.
- ^ Cox, Alex (29 July 2012). "The Fretful Birth of the New Western". The New York Times. Retrieved 29 July 2012.
- ^ "The Monkey Wrench Gang" at IMDb.
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