MATURELL AGUILERA, Araíz; VALIENTE SANDÓ, Pedro. Improvement of principals´ performance in comprehensive schools: it´s historical evolution in Cuba from 1899 to 2015. Avances en Supervisión Educativa, [S. l.], n. 25, 2016. DOI: 10.23824/ase.v0i25.552. Disponível em: https://avances.adide.org/index.php/ase/article/view/552. Acesso em: 14 aug. 2025.