F.Simatupang, F.Simatupang, Y.Salamanang Y.Salamanang, A.Tampubolon A.Tampubolon, F.Sianipar F.Sianipar, and N.Sinaga N.Sinaga. “Improving the Self-Assessment Tools for Training in Speaking to Grade Seven Students of Junior High School”. Jurnal sosial dan sains 2, no. 3 (March 15, 2022): 410–418. Accessed November 15, 2024. https://sosains.greenvest.co.id/index.php/sosains/article/view/366.