National Research Council (U.S.). Transportation Research Board. Committee on Public Transportation Planning and Development. Subcommittee on Definitions. (1978). Glossary of urban public transportation terms. National Academy of Sciences.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNational Research Council (U.S.). Transportation Research Board. Committee on Public Transportation Planning and Development. Subcommittee on Definitions. Glossary of Urban Public Transportation Terms. Washington: National Academy of Sciences, 1978.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিNational Research Council (U.S.). Transportation Research Board. Committee on Public Transportation Planning and Development. Subcommittee on Definitions. Glossary of Urban Public Transportation Terms. National Academy of Sciences, 1978.