OSIH, S.; SINGH, U. Students’ perception on the adoption of an e-textbook (digital) as an alternative to the printed textbook. South African Journal of Higher Education, [S. l.], v. 34, n. 6, p. 201–215, 2020. DOI: 10.20853/34-6-3892. Disponível em: https://www.journals.ac.za/sajhe/article/view/3892. Acesso em: 7 oct. 2025.