APA (7th ed.) Citation

Colorado Historical Association & Chamblin, T. S. (1968). The Historical encyclopedia of Colorado (Rev. ed.). Colorado Historical Association.

Chicago Style (17th ed.) Citation

Colorado Historical Association and Thomas S. Chamblin. The Historical Encyclopedia of Colorado. Rev. ed. [Denver?]: Colorado Historical Association, 1968.

MLA (9th ed.) Citation

Colorado Historical Association and Thomas S. Chamblin. The Historical Encyclopedia of Colorado. Rev. ed. Colorado Historical Association, 1968.