American Water Works Association, ProQuest (Firm), & Sham, C. H. (2010). Operational guide to AWWA standard G300, source water protection. American Water Works Association.
Chicago-Zitierstil (17. Ausg.)American Water Works Association, ProQuest (Firm), und Chi Ho Sham. Operational Guide to AWWA Standard G300, Source Water Protection. Denver, Colo.: American Water Works Association, 2010.
MLA-Zitierstil (9. Ausg.)American Water Works Association, et al. Operational Guide to AWWA Standard G300, Source Water Protection. American Water Works Association, 2010.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.