Situmorang, G. E., Napitupulu, S. and Siahaan, B. L. (2025) “The Effect Of Student Team-Achievement Division (STAD) Technique On The Students’ Speaking Ability Of Grade Eight Of SMP Negeri 2 Pematangsiantar”, Innovative: Journal Of Social Science Research, 5(2), pp. 3384–3395. doi: 10.31004/innovative.v5i2.18651.