ZAPERECKAITĖ, M. Issues in the second year of teaching vocabulary. Psichologija, [S. l.], v. 5, p. 65–72, 1963. DOI: 10.15388/Psichol.1963.5.8891. Disponível em: https://www.journals.vu.lt/psichologija/article/view/8891.. Acesso em: 3 may. 2024.