Gaya APA

Khalid, K, M, ;. (1985). Umar Ibn'l Khattab Mukmin Perkasa . Surabaya: Pustaka Anda Surabaya,.

Gaya MLA

Khalid, Khalid, Muhammad, ;. "Umar Ibn'l Khattab Mukmin Perkasa". Surabaya: Pustaka Anda Surabaya,, 1985. Text.