Siahaan, M. M., R. Purba, and T. A. Sianturi. “Application of Social Competence (ASCAAL) to Improve Student Learning Creativity in the Online Learning System (SPADA) in the Covid-19 Pandemic Era”. Journal of Education Technology, vol. 5, no. 4, Nov. 2021, pp. 539-46, doi:10.23887/jet.v5i4.40377.