GUPTA, A. D. Direct Subscription with the Publishers vs. Subscription through Agents - A Case Study. Journal of Information and Knowledge, [S. l.], v. 21, n. 2, p. 119–128, 1984. DOI: 10.17821/srels/1984/v21i2/49350. Disponível em: https://srels.org/index.php/sjim/article/view/49350. Acesso em: 10 jan. 2025.