1. The Government Social Survey SS 332;McKennell;Noise annoyance in Central London,1966
2. The Social Survey Report Ref. SS;McKennell,1963
3. National Physical Laboratory Aero Report AC 39;Robinson;An outline guide to criteria for the limitation of urban noise,1969
4. Building Research Station Current Publication 37/68;Grwfrrhs;Subjective response to road traffic noise,1968
5. Building Research Station Current Publication 38/68;Langdon;The traffic noise index—a method of controlling noise nuisance,1968