Gaya APA

Umar, A, B. (2006). At - Tawakkal Alallah Ta'ala (Cet.1). Jakarta: Darul Falah.

Gaya MLA

Umar, Abdullah, Bin. "At - Tawakkal Alallah Ta'ala". Cet.1 Jakarta: Darul Falah, 2006. Monograf.