Leni Dwi Utami, Denny Ayu Safitri, Nadia Yolanda, Zulfia Rahmih, Icha Khaerunnisa, and Katharina Maria Tredi Saka. “Sobat KTR: A Peer Support Group Program To Increase Adolescents’ Awareness of The Dangers of Smoking and Smoke-Free Areas”. Journal of Community Engagement in Health 9, no. 2 (September 30, 2026): 303–313. Accessed October 1, 2026. https://jceh.org/index.php/JCEH/article/view/832.