Paputungan, Frezy. “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”. Journal of Education and Culture (JEaC) 3, no. 1 (January 9, 2023): 41-46. Accessed July 4, 2024. https://journals.ubmg.ac.id/index.php/JEaC/article/view/1118.