Não informado. (2001). Bibliography. National Research Council, Transportation Research Board.
Chicago-Zitierstil (17. Ausg.)Não informado. Bibliography. Washington: National Research Council, Transportation Research Board, 2001.
MLA-Zitierstil (8. Ausg.)Não informado. Bibliography. National Research Council, Transportation Research Board, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.