LADAN , S. A.; BELLO , S. . COST AND RETURNS OF SCHOOL-BASED TEACHER DEVELOPMENT: PERSPECTIVES OF STAKEHOLDERS IN SOKOTO SOUTH EDUCATION ZONE, NIGERIA. Sokoto Educational Review, [S. l.], v. 25, n. 1, p. 108–119, 2026. Disponível em: https://sokedureview.org/index.php/SER/article/view/603. Acesso em: 26 jul. 2026.