Gaya APA

Muhammad, S, ,, A., Jalil, I. (2017). Biografi Umar bin Khattab (Cet. I). Jakarta: Ummul Qura.

Gaya MLA

Muhammad, Shallabi, ,, Ali., Jalil, Ismail. "Biografi Umar bin Khattab". Cet. I Jakarta: Ummul Qura, 2017. Text.