Khrueakham, A., Pongkureekan, S., Phallapang, S., Wannatip, I. and Ponngern, P. 2009. Consumers’ Satisfaction of Nontree E-sarn Drinking Water Produced by Kasetsart University, Chalermphrakiat Sakonnakhon Province Campus. Kasetsart Journal of Social Sciences. 30, 1 (Apr. 2009), 48–59.