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