American Public Health Association & American Water Works Association. (1976). Standard methods for the examination of water and wastewater. American Public Health Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)American Public Health Association و American Water Works Association. Standard Methods for the Examination of Water and Wastewater. Washington, D.C: American Public Health Association, 1976.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)American Public Health Association و American Water Works Association. Standard Methods for the Examination of Water and Wastewater. American Public Health Association, 1976.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.