F.Simatupang, F., Y.Salamanang, Y., A.Tampubolon, A., F.Sianipar, F. and N.Sinaga, N. (2022) “Improving the Self-Assessment Tools for Training in Speaking to Grade Seven Students of Junior High School”, Jurnal sosial dan sains, 2(3), pp. 410–418. doi: 10.59188/jurnalsosains.v2i3.366.