intalaw, siwaporn, วงษ์สรรค์ ว., and สมบูรณ์ ธ. “DEVELOPMENT OF CITIZENSHIP LEARNING PACKAGES TOWARD THE LAW IN DAILY LIFE BY USING PROBLEM BASED LEARNING (PBL) FOR SECONDARY SCHOOL YEAR 3 STUDENTS”. Mahamakut Graduate School Journal, vol. 20, no. 1, June 2022, https://so04.tci-thaijo.org/index.php/mgsj/article/view/259764.