Ong , P. T. (2004). Wastewater quality changes under anoxic conditions: A study on palm oil mill effluent (POME) addition in pressure sewer as external nitrate source.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ong , Peck Ting. Wastewater Quality Changes Under Anoxic Conditions: A Study on Palm Oil Mill Effluent (POME) Addition in Pressure Sewer as External Nitrate Source. 2004.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ong , Peck Ting. Wastewater Quality Changes Under Anoxic Conditions: A Study on Palm Oil Mill Effluent (POME) Addition in Pressure Sewer as External Nitrate Source. 2004.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.