V. NANTHAVONG, V. Thongthavy, P. KAMKEINGYOM, and P. NANTHAVONG, “The Development of Thamma Alphabet Reading and Writing Skill of Students Lao Language and Literature Year 2, Using Cooperative Integrated Reading and Composition or Circ Technique”, sujournal, vol. 9, no. 3, pp. 45–54, May 2023.