American Water Works Association, ebrary, Inc, & Maxwell, S. (2008). Business of water: A concise overview of challenges and opportunities in the water market : a compilation of recent articles from Journal AWWA. American Water Works Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)American Water Works Association, Inc ebrary, و Steve Maxwell. Business of Water: A Concise Overview of Challenges and Opportunities in the Water Market : A Compilation of Recent Articles from Journal AWWA. Denver, Colo.: American Water Works Association, 2008.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)American Water Works Association, et al. Business of Water: A Concise Overview of Challenges and Opportunities in the Water Market : A Compilation of Recent Articles from Journal AWWA. American Water Works Association, 2008.