Highway in the USA. CANAMEX Corridor Coalition. [2012-10-12]. (原始内容存档于2012-10-12). ArizonaState Legislature. HJR2003 - 421R — S Ver. State of Arizona. [2008-04-13]
to a gap in the description, unfilled by any route. California Streets and Highways Code, Section 231 加利福尼亚州运输部, Other State Highway Routes (页面存档备份,存于互联网档案馆)