“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” (2023) Journal of Education and Culture (JEaC), 3(1), pp. 41–46. doi:10.47918/jeac.v3i1.1118.