Gaya APA

Shallabi, P, M, A. (2010). Biografi : Umar Bin Al-Khatab (Ed.1 cet 1). : Pustaka Al- Kautsar.

Gaya MLA

Shallabi, Prof.DR.Ali, Muhammad, Ash-. "Biografi : Umar Bin Al-Khatab". Ed.1 cet 1 : Pustaka Al- Kautsar, 2010. Text.