Gaya APA

Husain, H, M. (2002). Umar bin khattab (cet.3). Bogor: Pustaka Litera Antar Nusa.

Gaya MLA

Husain, Haekal;, Muhammad. "Umar bin khattab". cet.3 Bogor: Pustaka Litera Antar Nusa, 2002. Printed Book.