Executive Summary(PDF). Program of Mass Transportation. Boston Regional Metropolitan Planning Organization: 2-9. January 2004 [2019-10-30]. (原始内容存档(PDF)于2012-02-20).
Executive Summary(PDF). Program of Mass Transportation. Boston Regional Metropolitan Planning Organization: 2-9. January 2004 [2019-10-30]. (原始内容存档(PDF)于2012-02-20).
Subway Map(PDF). Massachusetts Bay Transportation Authority. 2001 [2019-10-30]. (原始内容存档(PDF)于2001-07-01).
MBTA Short Notes(PDF). TRANSreport (Boston Metropolitan Planning Organization). February 2003: 6 [2019-10-30]. (原始内容存档(PDF)于2011-01-16).