NADIA BATOOL NEHAL, FARIDA AZIM LODHI. AN INVESTIGATIVE STUDY ON THE VALIDITY & RELIABILITY OF FRANCHISE SCHOOLING SYSTEMS IN KARACHI. Pakistan Journal of Educational Research , [S. l.], v. 5, n. 4, 2022. DOI: 10.52337/pjer.v5i4.708. Disponível em: https://pjer.org/index.php/pjer/article/view/708. Acesso em: 31 jul. 2026.