Silaban, Roikestina, Faija Sihombing, Tulus JT. Panjaitan, Lidia Silaban, and Melda Oktika Ginting. 2025. “Improving Students’ English Speaking Skills Through Collaborative Learning at Anastasya School Medan ”. Dedikasi Sains Dan Teknologi (DST) 5 (1):27-35. https://doi.org/10.47709/dst.v5i1.6366.