June 2010 [14 June 2010]. [失效連結] Weir, Kytja. Bombardier wins $204m MARC commuter train contract. The Washington Examiner. 17 October 2012 [28 October 2012]
buses operated by other local transit agencies, and adding local bus schedules and commuter rail routes (such as Maryland's MARC and Virginia's VRE) to WMATA's