“The Effectiveness of Classical Guidance in Increasing Drug Resistance Among Adolescents at Pusat Pengembangan Anak Gereja Kristen Perjanjian Baru Pematangsiantar”, Insight J. Couns. Psychol., vol. 1, no. 2 March, pp. 9–15, Jun. 2026, doi: 10.66851/ijcp.v1i2.196.