Gaya APA

Khalid, K, M. et al (2014). Umar ibn Al-Khathab : khalifah penegak keadilan (Ed. 1, Cet. 1). Bandung: Mizania.

Gaya MLA

Khalid, Khalid, Muhammad. et al. "Umar ibn Al-Khathab : khalifah penegak keadilan". Ed. 1, Cet. 1 Bandung: Mizania, 2014. Text.