Fitzpatrick, M., & Bonnefoy, X. (1999). Environmental health services in Europe 4: Guidance on the development of educational and training curricula. World Health Organization, Regional Office for Europe.

Fitzpatrick, Martin, and Xavier Bonnefoy. Environmental Health Services in Europe 4: Guidance on the Development of Educational and Training Curricula. Copenhagen: World Health Organization, Regional Office for Europe, 1999.

Fitzpatrick, Martin, and Xavier Bonnefoy. Environmental Health Services in Europe 4: Guidance on the Development of Educational and Training Curricula. World Health Organization, Regional Office for Europe, 1999.