APA

Miller P. H., Coale B. V. & Colorado and Black Canyon of the Gunnison Nature Association. (1969). Colorado National Monument: a fantastic landscape sculptured by erosion. n.p: Colorado and Black Canyon of the Gunnison Nature Association.

Chicago

Miller Pat H, Coale Burton V and Colorado and Black Canyon of the Gunnison Nature Association. 1969. Colorado National Monument: a fantastic landscape sculptured by erosion. n.p: Colorado and Black Canyon of the Gunnison Nature Association.

Harvard

Miller P. H., Coale B. V. and Colorado and Black Canyon of the Gunnison Nature Association. (1969). Colorado National Monument: a fantastic landscape sculptured by erosion. n.p: Colorado and Black Canyon of the Gunnison Nature Association.

MLA

Miller Pat H, Coale Burton V and Colorado and Black Canyon of the Gunnison Nature Association. Colorado National Monument: a fantastic landscape sculptured by erosion. n.p: Colorado and Black Canyon of the Gunnison Nature Association. 1969.