“The Role of Cost and Quality of Documentary Credit in Achieving the Competitive Advantage in Banks: An Applied Research in North Bank for Finance and Investment and The United Bank for Investment”. Journal of Accounting and Financial Studies ( JAFS ), no. خاص (February 26, 2020). Accessed December 19, 2024. https://jpgiafs.uobaghdad.edu.iq/index.php/JAFS/article/view/765.