Gaya APA

Ra\'ana, M, I., Djoely, M. (1997). Sistem Ekonomi Pemerintahan Umar Ibn Al Khatthab / Mahmud Irfan Ra'ana; penerjemah Mansuruddin Djoely (Cet. 2). Jakarta: Firdaus.

Gaya MLA

Ra\'ana, Mahmud, Irfan., Djoely, Mansuruddin. "Sistem Ekonomi Pemerintahan Umar Ibn Al Khatthab / Mahmud Irfan Ra'ana; penerjemah Mansuruddin Djoely". Cet. 2 Jakarta: Firdaus, 1997. Text.