Sarika, V., C. Mangkhang, and J. Dibyamandala. “SOCIAL STUDIES LEARNING PACKAGE DEVELOPMENT IN ECONOMICS INTEGRATING WITH HISTORICAL PROCESS TO ENHANCE DIGITAL CITIZENSHIP FOR SECONDARY STUDENTS”. Journal of MCU Nakhondhat, vol. 8, no. 5, May 2021, pp. 73-86, https://so03.tci-thaijo.org/index.php/JMND/article/view/252202.