Gaya APA

Khalid, K, M., Satari, R. (2014). Umar ibn Al-Khaththab: khalifah penegak keadilan (cet. 1). bandung: Mizania.

Gaya MLA

Khalid, Khalid, Muhammad., Satari, Rashid. "Umar ibn Al-Khaththab: khalifah penegak keadilan". cet. 1 bandung: Mizania, 2014. Text.