Drew, C. H. (2000). Environmental health service in Europe 5: Guidelines for evaluation of environmental health services. WHO.
Chicago-viite (17. p.)Drew, Christina H. Environmental Health Service in Europe 5: Guidelines for Evaluation of Environmental Health Services. Europe: WHO, 2000.
MLA-viite (9. p.)Drew, Christina H. Environmental Health Service in Europe 5: Guidelines for Evaluation of Environmental Health Services. WHO, 2000.
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