СИНКЯВИЧЮС, Клеменсас. Contemporary Problems of Librarian’s Profession. Knygotyra, [S. l.], v. 10, n. 3, p. 43–52, 1973. DOI: 10.15388/Knygotyra.1973.27181. Disponível em: https://test.zurnalai.vu.lt/knygotyra/article/view/27181. Acesso em: 25 oct. 2025.