Eckstein, O. (1983). The DRI model of the U.S. economy. McGraw-Hill.
Cita Chicago (17th ed.)Eckstein, Otto. The DRI Model of the U.S. Economy. New York: McGraw-Hill, 1983.
Cita MLA (9th ed.)Eckstein, Otto. The DRI Model of the U.S. Economy. McGraw-Hill, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.