Sinambela E, Pakpahan C, Sagala P. Training of Improving Students’ Speaking Skills by Using Talking Ball Game at SMA Kalam Kudus Medan. . JAM [Internet]. 2022 Sep. 15 [cited 2026 Apr. 18];1(1):69-76. Available from: https://www.journal.eltaorganization.org/index.php/ecdj/article/view/103