APA Citation

Ra'ana, I. M. (1991). Economic system under 'Umar the great. Lahore: SH. Muhamad Ashraf.

Chicago Style Citation

Ra'ana, Irfan Mahmud. Economic System Under 'Umar the Great. Lahore: SH. Muhamad Ashraf, 1991.

MLA Citation

Ra'ana, Irfan Mahmud. Economic System Under 'Umar the Great. Lahore: SH. Muhamad Ashraf, 1991.

Warning: These citations may not always be 100% accurate.