Tambunan, Marlina Agkris, and Novra Melisa P Hutabarat. “The Effectiveness of the Glasser Learning Model Based on Local Wisdom on Speaking Skills State 1 Galang SMA Students”. International Journal of Multidisciplinary: Applied Business and Education Research, vol. 3, no. 10, Oct. 2022, pp. 2142-9, https://doi.org/10.11594/ijmaber.03.10.26.