BRINIA, V.; CHARALAMPOUS, S. Improving Effectiveness Via Motivation: The Views of Teachers in Secondary Education. International Journal of Academic Research in Progressive Education and Development, [S. l.], v. 4, n. 1, 2015. Disponível em: https://ijarped.com/index.php/journal/article/view/234. Acesso em: 8 oct. 2025.