Vaganova, Olga I., Marina N. Bulaeva, Liliya A. Meteleva, Alena A. Popkova, y Ekaterina V. Vezetiu. «Portfolio As an Educational Technology in the Educational Process of a University». Revista Amazonia Investiga 9, no. 25 (enero 25, 2020): 356–361. Accedido febrero 1, 2026. https://www.amazoniainvestiga.info/index.php/amazonia/article/view/1080.