SVĖRIENĖ, Audronė. The Develoment of the Concept "Textbook". Knygotyra, [S. l.], v. 39, p. 230–233, 2024. DOI: 10.15388/Knygotyra.39.14. Disponível em: https://journals.vu.lt./knygotyra/article/view/36310. Acesso em: 27 apr. 2025.