"real income," The New Palgrave: A Dictionary of Economics", v. 4, p. 104.</ref> ويمكن الحصول على مؤشر أسعار متوافق من خلال الناتج القومي.
"real income," The New Palgrave: A Dictionary of Economics", v. 4, p. 104.</ref> A corresponding price index can also be derived from national output.