JAFEER MOHAMED AL-UBEYD MANSOUR. Application of Systems Theory According to Imam Bediüzzaman Said Nursi Through His Book “Isharat’ul-I’caz Fi Mezanni’l-Icaz. The Journal of Risale-i Nur Studies, [S. l.], v. 2, n. 2, p. 62–73, 2019. Disponível em: https://thejrns.org/index.php/thejrns/article/view/24. Acesso em: 18 jun. 2025.