Gaya APA

Ash-Shalabi, A, M. et al (2008). Biografi Umar Bin Khathab (5). : Pustaka Al-Kautsar.

Gaya MLA

Ash-Shalabi, Ali, Muhammad. et al. "Biografi Umar Bin Khathab". 5 : Pustaka Al-Kautsar, 2008. Text.