1. Scientific publication;N. E. Breslow,1980
2. Code of Practice: 1982, The Protection of Hearing in Industrial Undertakings, Labour Department, Hong Kong Government.
3. Code of Practice: 1982, Reducing the Exposure of Employed Persons to Noise, HMSO: London.
4. Evans, W. A. and Hui, Y. M.: 1982, ?Industrial noise-induced hearing loss in Hong Kong ? a comparative study?, Annals of Occupational Hygiene 25, 63?80.
5. Health and Safety Executive: 1978, Discussion Document: Audiology in Industry, HMSO: London.