Nguyen Thi Huyen Cham และ Jakkrit Sangkhamanee. (2014) Access to and usage of clean water in peri-urban Vietnam : a case study of Gia Lam district, Hanoi. Chulalongkorn University:ม.ป.ท.Nguyen Thi Huyen Cham และ Jakkrit Sangkhamanee. 2014. Access to and usage of clean water in peri-urban Vietnam : a case study of Gia Lam district, Hanoi. ม.ป.ท.:Chulalongkorn University;Nguyen Thi Huyen Cham และ Jakkrit Sangkhamanee. Access to and usage of clean water in peri-urban Vietnam : a case study of Gia Lam district, Hanoi. ม.ป.ท.:Chulalongkorn University, 2014. Print.