References
- The IPCS is a joint venture of the World Health Organization. The International Labour Organization and the United Nations Environment Programme
- World Health Organization. Use of Essential Drugs. Model list of essential drugs (6th list). WHO Technical Report Series 850. World Health Organization, Geneva 1995
- Distributed on a subscription basis on behalf of the IPCS by the Canadian Centre for Occupational Health and Safety. CCOHS, Hamilton, OntarioCanada, L8N 1H6