Tinopi , Loisa Marsolita Angganeta, et al. “Implementation of Classical Guidance Services Using Group Discussion Techniques to Enhance Assertive Behavior Among Grade X-1 Vocational High School (SMK) Students”. EDUJAVARE: International Journal of Educational Research, vol. 4, no. 02, Oct. 2026, pp. 2211-20, doi:10.70610/edujavare.1820.