P. N. Aggavaddhano (Nookua), P. Y. Thitavaddhano, and L. Klomkul, “A CAUSAL RELATIONSHIP OF FACTORS INFLUENCING LEARNING ACHIEVEMENT OF MATHAYOMSUKSA 6TH STUDENTS UNDER SECONDARY EDUCATIONAL SERVICE AREA OFFICE 4”, Education MCU, vol. 9, no. 3, pp. 12–22, Dec. 2022.