NOOR, Firman. Leadership and Ideological Bond: PPP and Internal Fragmentation in Indonesia. Studia Islamika, [S. l.], v. 23, n. 1, p. 61–103, 2016. DOI: 10.15408/sdi.v23i1.2808. Disponível em: https://studiaislamika.ppimcensis.or.id/index.php/studia-islamika/article/view/2808. Acesso em: 5 oct. 2025.