Raffar Mat. (2015). Kerajaan Khalifah Islam: Pemerintahan Khulafa' Ar-Rashidin. Hijjaz Record Publishing.
Chicago Style (17th ed.) CitationRaffar Mat. Kerajaan Khalifah Islam: Pemerintahan Khulafa' Ar-Rashidin. Petaling Jaya, Selangor: Hijjaz Record Publishing, 2015.
MLA (8th ed.) CitationRaffar Mat. Kerajaan Khalifah Islam: Pemerintahan Khulafa' Ar-Rashidin. Hijjaz Record Publishing, 2015.
Warning: These citations may not always be 100% accurate.