Supapong Boonsad, and Authhapon Intasena. “The Development of Thai L1 Grade 4 Students’ Spelling Skills Using the Integrated Explicit Instruction and Metacognition Exercises”. Journal of Educational Issues, vol. 8, no. 1, June 2024, pp. pp. 230-239, doi:10.5296/jei.v8i1.19611.