K. . Buhngo, K. . Meesomsarn, and P. . Jearakul, “THE EFFECTS OF TOKEN ECONOMY REINFORCEMENT ON SELF - DISCIPLINE OF PRESCHOOL CHILDREN IN SCHOOLS UNDER SURAT THANI PRIMARY EDUCATION SERVICE AREA OFFICE 2”, JMND, vol. 7, no. 12, pp. 15–30, Dec. 2020.