Lumbantobing LF, Simanjuntak GG, Sinaga L, Hutajulu D, Saragih PS, Sinaga MN, Napitupulu S. AN ANALYSIS ON SPEAKING PROBLEMS IN SMP NEGERI 3 PEMATANG SIANTAR. KOLONI [Internet]. 2022 Nov. 16 [cited 2026 May 25];1(4):109-14. Available from: https://koloni.or.id/index.php/koloni/article/view/276