R. Boonruang, “THE DEVELOPMENT OF A SUPPLEMENTARY READING BOOK SERIES, ‘LEARNING POEMS AND TEACHING VOWELS: WE LOVE PHAYAO,’ IN CONJUNCTION WITH THE FOUR BLOCKS LEARNING TECHNIQUE, AIMS TO IMPROVE READING COMPREHENSION ACHIEVEMENT FOR FIRST-GRADE STUDENTS”, Education MCU, vol. 13, no. 2, pp. 43–55, Sep. 2026.