Franklin

MLA

Ellis, Richard N., and Duane A Smith. Colorado : a History In Photographs. Rev. ed. Boulder, Col.: University Press of Colorado, 2005.

APA

Ellis, R. N., & Smith, D. A. (2005). Colorado : a history in photographs. Rev. ed. Boulder, Col.: University Press of Colorado.

Chicago

Ellis, Richard N., and Duane A Smith. Colorado: A History In Photographs. Rev. ed. Boulder, Col.: University Press of Colorado, 2005.