Yusra, T., Purwanto, E. and Awalya, A. (2020) “The Effectiveness of Classroom Guidance with Problem-based Learning and Jigsaw Techniques to Improve Negative Attitudes towards Premarital Sexual Behavior”, Jurnal Bimbingan Konseling, 9(1), pp. 7-12. Available at: https://journal.unnes.ac.id/sju/jubk/article/view/34629 (Accessed: 18July2024).