Napasawan Khongkham และ Tawan Limpiyakorn. (2008) Effect of ammonia oxidizing bacteria communities in enriched nitrifying activated sludge and sludge from full scale wastewater treatment plants on degradation of 17α-ethynylestradiol via co-metabolism. Chulalongkorn University:ม.ป.ท.Napasawan Khongkham และ Tawan Limpiyakorn. 2008. Effect of ammonia oxidizing bacteria communities in enriched nitrifying activated sludge and sludge from full scale wastewater treatment plants on degradation of 17α-ethynylestradiol via co-metabolism. ม.ป.ท.:Chulalongkorn University;Napasawan Khongkham และ Tawan Limpiyakorn. Effect of ammonia oxidizing bacteria communities in enriched nitrifying activated sludge and sludge from full scale wastewater treatment plants on degradation of 17α-ethynylestradiol via co-metabolism. ม.ป.ท.:Chulalongkorn University, 2008. Print.