Rahmat Ihtiar R, Sugiyo S, Awalya A. Improving Students’ Self-Esteem through Group Counseling with Assertive Training and Positive Reinforcement Techniques. JUBK [Internet]. 30Dec.2022 [cited 23Nov.2024];11(4):273-80. Available from: https://journal.unnes.ac.id/sju/jubk/article/view/63348