- Canada´s national occupational health & safety resource
- American industrial hygiene association
- National Institute for Occupational Safety and Health (NIOSH)
- Noise induced hearing loss and its prevention
- CDC office of health and safety / hearing conservation program
- National Institute of Environmental Health Sciences (NIEHS) / Hearing conservation program
- Occupational safety & health administration (OSHA)
- Instituto Nacional de Salud de los Trabajadores (INSAT)
- Enciclopedia de Salud y Seguridad en el Trabajo
Medicina ocupacional en ORL
. En: Actualidades 
