APA (7th ed.) Citation

Historic Tours of America (Firm) & Old Town Trolley Tours (Boston, Mass.). (2005). Free map, Boston. Historic Tours of America.

Chicago Style (17th ed.) Citation

Historic Tours of America (Firm) and Mass.) Old Town Trolley Tours (Boston. Free Map, Boston. [Key West, Florida?]: Historic Tours of America, 2005.

MLA (9th ed.) Citation

Historic Tours of America (Firm) and Mass.) Old Town Trolley Tours (Boston. Free Map, Boston. Historic Tours of America, 2005.