ebrary, Inc. (2009). Night noise guidelines for Europe. World Health Organization Europe.
Cita Chicago (17th ed.)ebrary, Inc. Night Noise Guidelines for Europe. Copenhagen: World Health Organization Europe, 2009.
Cita MLA (9th ed.)ebrary, Inc. Night Noise Guidelines for Europe. World Health Organization Europe, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.