Dr. Zia Ur Rehman, Dr. Naseem Akhter, Dr. Muhammad Shabeer, Dr. Sadiq Ali, Dr. Atiq Ullah and Dr. Qaisar Bilal 2022. The Services of Hadrat Abu Bakr (RA) As a Companion of Muhammad (PBUH) for Islam (A Short Analysis from the Mirror of History). OEconomia. 5, 2 (Dec. 2022), 34–41.