American Water Works Association, ebrary, Inc, & Sham, C. H. (2010). Operational guide to AWWA standard G300, source water protection. American Water Works Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)American Water Works Association, Inc ebrary, و Chi Ho Sham. Operational Guide to AWWA Standard G300, Source Water Protection. Denver, Colo.: American Water Works Association, 2010.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)American Water Works Association, et al. Operational Guide to AWWA Standard G300, Source Water Protection. American Water Works Association, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.