Khanthong, P. (2019). The Applicationofthe Quality Management System of ISO 9001: 2008 in the Improvement of the Water Suppliy Services of Municipal Waterworks Authority of Tak Fah Subdistrict Municipality, Nakhornsawan Province. Naresuan University Journal: Science And Technology (NUJST), 22(3), 110-124. Retrieved from http://www.journal.nu.ac.th/NUJST/article/view/2744