-, .-. Проблемы образования. проект байкал, Irkutsk, Russian Federation, v. 8, n. 27, p. 12–12, 2011. DOI: 10.7480/projectbaikal.27.360. Disponível em: https://projectbaikal.com/index.php/pb/article/view/360. Acesso em: 23 ноя. 2024.