Gaya APA

Ashshallabi, A, M. (2018). Biografi Umar Bin Khattab . Qohiroh, Maktabah Jaziroh: Ummul Qura.

Gaya MLA

Ashshallabi, Ali, Muhammad. "Biografi Umar Bin Khattab". Qohiroh, Maktabah Jaziroh: Ummul Qura, 2018. Text.