Haryanto, Sigit, Rini Fatmawati, S Sumayah, and Esa Nabila Umara. “Web-Based Question and Answer Method to Improve Student Achievement for Sociolinguistics Course Participants”. Urecol Journal. Part A: Education and Training 2, no. 1 (August 21, 2022): 18–24. Accessed September 24, 2024. http://snp.ums.ac.id/index.php/ujet/article/view/123.