FREEDMAN, Maurice J. Circulation Systems Past and Present. Information Technology and Libraries, [S. l.], v. 14, n. 4, p. 278–285, 1981. DOI: 10.6017/ital.v14i4.5306. Disponível em: https://ital.corejournals.org/index.php/ital/article/view/5306. Acesso em: 20 feb. 2024.