Panduwinata LF, Wulandari RNA, Puspasari D, Puspasari D, Wati AP. Developing a case-based e-book for office communication: Enhancing critical thinking and practical skills. IJED [Internet]. 2025Aug.11 [cited 2025Aug.19];6(2):561-74. Available from: https://ojs.mahadewa.ac.id/index.php/ijed/article/view/4724