APA (7th ed.) Citation

Ra`ana, I. M. (1977). Economic system under `Umar the Great: A treatise on Muslim economy in early seventh century (2nd ed.). Sh. Muhammad Ashraf.

Chicago Style (17th ed.) Citation

Ra`ana, Irfan Mahmud. Economic System Under `Umar the Great: A Treatise on Muslim Economy in Early Seventh Century. 2nd ed. Lahore: Sh. Muhammad Ashraf, 1977.

MLA (9th ed.) Citation

Ra`ana, Irfan Mahmud. Economic System Under `Umar the Great: A Treatise on Muslim Economy in Early Seventh Century. 2nd ed. Sh. Muhammad Ashraf, 1977.