APA (7th ed.) Citation

Ra`ana, I. M., & Djoely, M. (1990). Sistem ekonomi: Pemerintahan Umar Ibn al-Khatab. Pustaka Firdaus.

Chicago Style (17th ed.) Citation

Ra`ana, Irfan Mahmud, and Mansuruddin Djoely. Sistem Ekonomi: Pemerintahan Umar Ibn Al-Khatab. Jakarta: Pustaka Firdaus, 1990.

MLA (9th ed.) Citation

Ra`ana, Irfan Mahmud, and Mansuruddin Djoely. Sistem Ekonomi: Pemerintahan Umar Ibn Al-Khatab. Pustaka Firdaus, 1990.