Gaya APA

Khalid, K, M. (2016). Biografi khalifah rasulullah Abu Bakar, Umar, Utsman, Ali, Umar Bin Abdul Aziz (Khulafaur Rasul) (Cet. Ke-3). Jakarta: Ummul Qura.

Gaya MLA

Khalid, Khalid, Muhammad. "Biografi khalifah rasulullah Abu Bakar, Umar, Utsman, Ali, Umar Bin Abdul Aziz (Khulafaur Rasul)". Cet. Ke-3 Jakarta: Ummul Qura, 2016. Text.