Taraif al-khulafa wa al-muluk

 Mahnan, Abd. Al; A`la;

Beirut : Dār al-Kutub al-ʿIlmiyyah , 1990

Khalifah Rasulullah: Abu Bakar Ash-Shiddiq

 Husein Muhammad Haikal; Abdul Kadir Mahdamy;

Solo : Pustaka Mantiq , 1994

Khalifah Ibn Khayyat : Fi tarikhihi wa tabaqatihi

 Ibn; Asi,Husain;

Beirut : Dār al-Kutub al-ʿIlmiyyah , 1993

Tarikh khulafa' : sejarah para penguasa islam

 Al; Suyūṭī, Jalāl al; Dīn `Abd al; Raḥmān ibn Abi Bakr; Rahman, Samson; Sulaiman, Imam;

Jakarta Timur : Pustaka Al-Kautsar , 2012

'Utsman ibn 'Affan : khalifah penjunjung Al-Qur'an

 Khalid, Khalid Muhammad; Satari, Rashid; Hasannudin , Cecep;

Bandung : Mizania , 2014

'Umar ibn Al-Khattab : khalifah penegak keadilan

 Khalid, Khalid Muhammad; Satari, Rashid; Hasannudin , Cecep;

Bandung : Mizania , 2014