Teachers’ Attitude, use of Self-Made Video Compact Disc and Calabar Municipality Students’ Academic Performance in Social Studies, Cross River State, Nigeria. Global Journal of Management and Business Research, [S. l.], v. 13, n. 13, p. 15–18, 2013. Disponível em: https://journalofbusiness.org/index.php/GJMBR/article/view/. Acesso em: 18 oct. 2026.