Gray, N. (1994). Drinking water quality: Problems and solutions. Chichester: John Wiley.
استشهاد بنمط شيكاغوGray, N.F. Drinking Water Quality: Problems and Solutions. Chichester: John Wiley, 1994.
MLA استشهادGray, N.F. Drinking Water Quality: Problems and Solutions. Chichester: John Wiley, 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.