Drew, C. H. (2000). Environmental health service in Europe 5: Guidelines for evaluation of environmental health services. WHO.
Παραπομπή σε μορφή Chicago (17η εκδ.)Drew, Christina H. Environmental Health Service in Europe 5: Guidelines for Evaluation of Environmental Health Services. Europe: WHO, 2000.
Παραπομπή σε μορφή MLA (9th εκδ.)Drew, Christina H. Environmental Health Service in Europe 5: Guidelines for Evaluation of Environmental Health Services. WHO, 2000.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.