Reskiani, Reskiani, and Supriadi Supriadi. “Implementation of Advance Organizer Learning Model Based on Numbered Heads Together (NHT) to Improve Learning Outcomes of Students in 11th Grade Science on Buffer at SMAN 2 Balaesang”. Jurnal Akademika Kimia 9, no. 3 (August 28, 2020): 176-182. Accessed June 22, 2025. https://jurnalfkipuntad.com/index.php/jak/article/view/315.