Islam & Khilafah : di Zaman Modern / Ar-Rayis, Dhi'auddin Muhammad Alwi As Burhan Wirasubrata text Jakarta : Lentera Basritama, 2002 ind Judul asli : Al-Islam wa al-Khilafah fi al-ashar al-hadits Islam - Perkembangan URN:ISBN:979-3018-32-1