AL - THIBIANI, Ahmed Hassan. The role of the school principal in developing the leadership skills of the students of the secondary school for boys in Riyadh city. Journal of Educational and Psychological Sciences, New Mexico, United States, v. 2, n. 12, p. 115–89, 2018. DOI: 10.26389/AJSRP.A110218. Disponível em: https://journals.ajsrp.com/index.php/jeps/article/view/277. Acesso em: 24 jan. 2026.