AVRAM, Henriette D.; GUILES, Kay D. Content Designators for Machine-Readable Records: A Working Paper. Information Technology and Libraries, [S. l.], v. 5, n. 4, p. 207–216, 1972. DOI: 10.6017/ital.v5i4.5741. Disponível em: https://ital.corejournals.org/index.php/ital/article/view/5741. Acesso em: 28 apr. 2024.