American Public Health Association, A. W. W. A. (1999). Standard Methods for the Examination of Water and Wastewater. US.
استشهاد بنمط شيكاغوAmerican Public Health Association, American Water Works Association. Standard Methods for the Examination of Water and Wastewater. US, 1999.
MLA استشهادAmerican Public Health Association, American Water Works Association. Standard Methods for the Examination of Water and Wastewater. US, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.