Miller, R. L. (1991). Economics, today and tomorrow (3rd ed.). Glencoe/McGraw-Hill.
Cita Chicago (17th ed.)Miller, Roger LeRoy. Economics, Today and Tomorrow. 3rd ed. Mission Hills, Calif: Glencoe/McGraw-Hill, 1991.
Cita MLA (8th ed.)Miller, Roger LeRoy. Economics, Today and Tomorrow. 3rd ed. Glencoe/McGraw-Hill, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.