СИНКЯВИЧЮС, Клеменсас. Contemporary Problems of Librarian’s Profession. Knygotyra, [S. l.], v. 10, n. 3, p. 43–52, 1973. Disponível em: https://www.journals.vu.lt/knygotyra/article/view/27181.. Acesso em: 29 apr. 2024.