Roe, J. (1992). The columbia river: A historical tranel guide. Colorado: Fulcrum Publishing.
Chicago Style CitationRoe, Joann. The Columbia River: A Historical Tranel Guide. Colorado: Fulcrum Publishing, 1992.
Cita MLARoe, Joann. The Columbia River: A Historical Tranel Guide. Colorado: Fulcrum Publishing, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.