Gaya APA

Abdul, A, B. (2002). Biografi Umar bin Abdul Aziz Penegak Keadilan (Cet. 1). Jakarta: gema insani press.

Gaya MLA

Abdul, Abdullah, Bin. "Biografi Umar bin Abdul Aziz Penegak Keadilan". Cet. 1 Jakarta: gema insani press, 2002. Text.