ZAHRA, Arjmand. Evolution of Societies: A Comparative Study of Ibn Khaldun and Herbert Spencer. Ittesaal – Journal of Connecting Discourses, [S. l.], v. 1, n. 1, p. 29–40, 2024. DOI: 10.64984/ijcd.1.1.2024.03. Disponível em: https://journal.ehya.com.pk/ijcd/article/view/3. Acesso em: 1 apr. 2026.