Promla P, Krootjohn S. THE EFFECT OF USING CHATBOT IN BLENDED LEARNING FOR VOCATIONAL CERTIFICATE STUDENTS IN THE COLLEGES UNDER THE INSTITUTE OF VOCATIONAL EDUCATION NORTHEASTERN REGION 1. J. IND. EDUC. [Internet]. 2020 Sep. 15 [cited 2024 May 5];19(2):100-1. Available from: https://ph01.tci-thaijo.org/index.php/JIE/article/view/240727