al-Khilāfah al-rāshidah fī ḍawʼ nuẓum al-takhṭīṭ al-muʻāṣirah /

by Ḥasan, Aḥmad (Aḥmad Saʻūd Aḥmad)
Kūwayt : Maktabat Āfāq, 2014
al-Ṭabʻah 2.

Taṭawwur mafhūm al-dawlah fī al-mujtamaʻ al-Islāmī al-awwal /

by Ṣayyādī, Mukhliṣ
[al-Shāriqah] : Dāʼirat al-Thaqāfah wa-al-Iʻlām, Ḥukūmāt al-Shāriqah, 2002
al-Ṭabʻah 1.