Gaya APA

Raana, M, I. (1992). Sistem ekonomi pemerintahan Umar ibn al Khatthab / Mahmud Irfan Ra'ana; penerjemah Mansuruddin Djoely (Cet. 2). : Firdaus.

Gaya MLA

Raana, Mahmud, Irfan. "Sistem ekonomi pemerintahan Umar ibn al Khatthab / Mahmud Irfan Ra'ana; penerjemah Mansuruddin Djoely". Cet. 2 : Firdaus, 1992. Referensi.