Sukunyasopee Chaiklam. (2020) The Roles and Upakkilesa in the Lower Northern Folk Tales. <i>Journal of Humanities and Social Sciences</i>, <i>39</i>(6), .116-128.Sukunyasopee Chaiklam. "The Roles and Upakkilesa in the Lower Northern Folk Tales". Journal of Humanities and Social Sciences 39 (2020):.116-128.Sukunyasopee Chaiklam. The Roles and Upakkilesa in the Lower Northern Folk Tales. mahasarakham university:ม.ป.ท. 2020.