Smith, A., & Sutherland, K. (1998). An inquiry into the nature and causes of the wealth of nations. Oxford: Oxford University Press.

Smith, Adam, و Kathryn Sutherland. An Inquiry Into the Nature and Causes of the Wealth of Nations. Oxford: Oxford University Press, 1998.

Smith, Adam, و Kathryn Sutherland. An Inquiry Into the Nature and Causes of the Wealth of Nations. Oxford: Oxford University Press, 1998.