Não informado. Notes on Water Pollution. Water Pollution Research Laboratory, Department of Scientific and Industrial Research.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Notes on Water Pollution. London: Water Pollution Research Laboratory, Department of Scientific and Industrial Research.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Notes on Water Pollution. Water Pollution Research Laboratory, Department of Scientific and Industrial Research.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.