Gaya APA
Aqqad, A, M. et al
(1993).
Keagungan Umar bin Khatab / Abbas Mahmud Aqqad
.
Solo:
Pustaka Mantiq.
Gaya MLA
Aqqad, Abbas, Mahmud. et al.
"Keagungan Umar bin Khatab / Abbas Mahmud Aqqad".
Solo:
Pustaka Mantiq,
1993.
Buku.