National Research Council (U.S.). Transportation Research Board. Committee on Public Transportation Planning and Development. Subcommittee on Definitions & Gray, B. H. (1989). Urban public transportation glossary. Transportation Research Board.
Cytowanie według stylu Chicago (wyd. 17)National Research Council (U.S.). Transportation Research Board. Committee on Public Transportation Planning and Development. Subcommittee on Definitions i Benita H. Gray. Urban Public Transportation Glossary. Washington, D.C: Transportation Research Board, 1989.
Cytowanie według stylu MLA (wyd. 9)National Research Council (U.S.). Transportation Research Board. Committee on Public Transportation Planning and Development. Subcommittee on Definitions i Benita H. Gray. Urban Public Transportation Glossary. Transportation Research Board, 1989.