NIKAM, K.; SUNIL, M. V. Effective Book Buying through a E-Book Store. Journal of Information and Knowledge, [S. l.], v. 37, n. 4, p. 245–250, 2000. DOI: 10.17821/srels/2000/v37i4/48929. Disponível em: https://srels.org/index.php/sjim/article/view/48929. Acesso em: 18 apr. 2025.