The Effectiveness of Classical Guidance in Increasing Drug Resistance Among Adolescents at Pusat Pengembangan Anak Gereja Kristen Perjanjian Baru Pematangsiantar. Insight J. Couns. Psychol. [Internet]. 2026 Jun. 18 [cited 2026 Jul. 7];1(2 March):9-15. Available from: https://esp-journal.com/index.php/insight/article/view/196