Não informado. (2012). Water and Sanitation. Canadian Engineer Publications.
Chicago-Zitierstil (17. Ausg.)Não informado. Water and Sanitation. Toronto, Canada: Canadian Engineer Publications, 2012.
MLA-Zitierstil (8. Ausg.)Não informado. Water and Sanitation. Canadian Engineer Publications, 2012.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.