"Pedestrian Safety". Police Department, University of Colorado. Dicapai pada 19 July 2017. ("[I]f you bicycle while intoxicated you will be held to the same standards as other motorists and may be issued a DUI.")
doi.org
Walsh, J. Michael; Gier, Johan J.; Christopherson, Asborg S.; Verstraete, Alain G. (11 August 2010). "Drugs and Driving". Traffic Injury Prevention. 5 (3): 241–253. doi:10.1080/15389580490465292. PMID15276925.