Syamsuddin L, Parman R, Buna SS. The Relationship Between Self-Esteem and Assertive Behavior Among Members of Student Organizations at Muhammadiyah University of Gorontalo. JCHP [Internet]. 2026Jun.26 [cited 2026Jul.3];6(2):449-58. Available from: https://psppjournals.org/index.php/jchp/article/view/981