QUAN, Guixian. The Influence of Head Teacher’s Leadership Style on Junior High School Students ’ Learning Engagement: The Mediating Effect of Self-efficacy. Transactions on Social Science, Education and Humanities Research, London, U.K., v. 11, p. 30–36, 2024. DOI: 10.62051/t4et8v48. Disponível em: https://wepub.org/index.php/TSSEHR/article/view/2549. Acesso em: 17 aug. 2026.