KUMAR, S. From Reference Service to Information Retrieval. Journal of Information and Knowledge, [S. l.], v. 29, n. 4, p. 165–168, 1992. DOI: 10.17821/srels/1992/v29i4/50662. Disponível em: https://srels.org/index.php/sjim/article/view/50662. Acesso em: 19 apr. 2025.