Angsana Phongnumkul และผู้แต่งคนอื่นๆ. (2020) The Development of Welfare Management System for Wiang Subdistrict Administration Organization, Wiang Pa Pao District, Chiang Rai. <i>Journal of Information Science</i>, <i>38</i>(2), 71-83.Angsana Phongnumkul และผู้แต่งคนอื่นๆ. "The Development of Welfare Management System for Wiang Subdistrict Administration Organization, Wiang Pa Pao District, Chiang Rai". Journal of Information Science 38 (2020):71-83.Angsana Phongnumkul และผู้แต่งคนอื่นๆ. The Development of Welfare Management System for Wiang Subdistrict Administration Organization, Wiang Pa Pao District, Chiang Rai. Klungnana Vitthaya Press:ม.ป.ท. 2020.