National Research Council (U.S.). Transportation Research Board. Section on public transportation. (1983). Private-sector role in public transportation: An overview. Transportation Research Board, National Academy of Sciences.
Chicago-referens (17:e uppl.)National Research Council (U.S.). Transportation Research Board. Section on public transportation. Private-sector Role in Public Transportation: An Overview. Washington, D.C: Transportation Research Board, National Academy of Sciences, 1983.
MLA-referens (9:e uppl.)National Research Council (U.S.). Transportation Research Board. Section on public transportation. Private-sector Role in Public Transportation: An Overview. Transportation Research Board, National Academy of Sciences, 1983.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.