APA
Colorado Historical Society, . (1986). Essays and monographs in Colorado history #4. Denver, Colorado: State Historical Society of Colorado.
Chicago
Colorado Historical Society, . 1986. Essays and monographs in Colorado history #4. Denver, Colorado: State Historical Society of Colorado.
Harvard
Colorado Historical Society, . (1986). Essays and monographs in Colorado history #4. Denver, Colorado: State Historical Society of Colorado.
MLA
Colorado Historical Society, . Essays and monographs in Colorado history #4. Denver, Colorado: State Historical Society of Colorado. 1986.