NURHIDAYAH, R.; WIDARTI, R. Promotional Strategy as Maintaining Efforts User Loyalty of Information Services in Library College. Record and Library Journal, [S. l.], v. 5, n. 1, p. 33–42, 2019. DOI: 10.20473/rlj.V5-I1.2019.33-42. Disponível em: https://e-journal.unair.ac.id/RLJ/article/view/12047. Acesso em: 21 nov. 2024.