Y.AL-KHAFAF, S. Digital Reference service: Its concept, styles, with a Proposal of its establishment at University of Mousl Central Library. Adab Al-Rafidayn, [S. l.], v. 42, n. 63, p. 431–462, 2000. DOI: 10.33899/radab.2012.71873. Disponível em: https://edusj.uomosul.edu.iq/index.php/radab/article/view/34535. Acesso em: 10 sep. 2025.