MACHADO RAMÍREZ, Dr.Cs. Evelio Felipe. The concept of educational research and its principles in the Cuban context. Transformación, [S. l.], v. 13, n. 1, p. 2–16, 2024. Disponível em: https://transformacion.reduc.edu.cu/index.php/transformacion/article/view/248. Acesso em: 21 nov. 2025.