Firdawati, A., A. Sinring, and S. Buchori. “The Effectiveness of Group Counseling Using Self-Management Techniques to Reduce Nomophobia in Vocational Students”. Quanta : Jurnal Kajian Bimbingan Dan Konseling Dalam Pendidikan, vol. 9, no. 1, Jan. 2025, pp. 29-39, doi:10.22460/quanta.v9i1.5274.