Não informado. (1987). Journal of the Institution of Water and Environmental Management. Institution of Water and Environmental Management.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Journal of the Institution of Water and Environmental Management. London: Institution of Water and Environmental Management, 1987.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Journal of the Institution of Water and Environmental Management. Institution of Water and Environmental Management, 1987.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.