Drew, C. H. (2000). Environmental health service in Europe 5: Guidelines for evaluation of environmental health services. WHO.
Chicago-Zitierstil (17. Ausg.)Drew, Christina H. Environmental Health Service in Europe 5: Guidelines for Evaluation of Environmental Health Services. Europe: WHO, 2000.
MLA-Zitierstil (9. Ausg.)Drew, Christina H. Environmental Health Service in Europe 5: Guidelines for Evaluation of Environmental Health Services. WHO, 2000.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.