BERNOTAS , V. The use of graphic representation at the lessons of natural science . Psichologija, [S. l.], v. 11, p. 117–122, 1971. DOI: 10.15388/Psichol.1971.11.9256. Disponível em: https://www.journals.vu.lt/psichologija/article/view/9256. Acesso em: 5 dec. 2025.