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 [Internet]. 2023 Jan. 9 [cited 2026 Apr. 3];11(1):1-11. Available from: https://journals.ubmg.ac.id/index.php/JIMB/article/view/1117