Situmorang GE, Napitupulu S, Siahaan BL. The Effect Of Student Team-Achievement Division (STAD) Technique On The Students’ Speaking Ability Of Grade Eight Of SMP Negeri 2 Pematangsiantar. Innovative [Internet]. 2025 Apr. 23 [cited 2026 Jun. 29];5(2):3384-95. Available from: https://j-innovative.org/index.php/Innovative/article/view/18651