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.