علي شلال أ. ع. . Measurement of mental formation and human intelligence “A follow-up review of its origin and development since 1801 ad”. مجلة أبحاث الذكاء, [S. l.], v. 15, n. 32, p. 582–594, 2022. Disponível em: https://iru.uomustansiriyah.edu.iq/index.php/intel/article/view/377. Acesso em: 27 apr. 2024.