Gaya APA
RIDHA, M.
(1937).
'Utsman bin 'Affan
.
Kairo:
Maktabah al-Jamiah.
Gaya MLA
RIDHA, Muhammad.
"'Utsman bin 'Affan".
Kairo:
Maktabah al-Jamiah,
1937.
Buku.