ROMADHONA, N.; EDDY WIBOWO, M.; MULAWARMAN, M. The Effectiveness of Mindfulness-Based Cognitive Behavior Therapy Group Counseling to Reduce Foreign Language Classroom Anxiety through Self-Efficacy in Grade IX Students of MTs PPMI Assalaam Sukoharjo. Jurnal Bimbingan Konseling, v. 11, n. 4, p. 366-344, 30 dez. 2022.