КАДИРОВА, Дилдора. Халифа Умар ибн Хаттаб. Research and Implementation, [S. l.], v. 3, n. 7, p. 29–33, 2025. Disponível em: https://rai-journal.uz/index.php/rai/article/view/1514. Acesso em: 24 май. 2026.