Business Effectiveness of Online Reading Books (E-Books) in the Digital Era for Bina Mandiri University Gorontalo Students: Keefektifan Bisnis Buku Bacaan Online ( E-Book) Era Digital untuk Mahasiswa Universitas Bina Mandiri Gorontalo. JIMB. 2023;11(1):1-11. Accessed April 3, 2026. https://journals.ubmg.ac.id/index.php/JIMB/article/view/1117