Havighurst, W. (1956). Wilderness for sale: The story of the first western land rush. Hastings House.
Chicago-referens (17:e uppl.)Havighurst, Walter. Wilderness for Sale: The Story of the First Western Land Rush. New York: Hastings House, 1956.
MLA-referens (8:e uppl.)Havighurst, Walter. Wilderness for Sale: The Story of the First Western Land Rush. Hastings House, 1956.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.