JOHNSTON, J. (1984). Econometric methods (3rd ed.). York, McGraw-Hill.
Cita Chicago (17th ed.)JOHNSTON, John. Econometric Methods. 3rd ed. Singapore: York, McGraw-Hill, 1984.
Cita MLA (9th ed.)JOHNSTON, John. Econometric Methods. 3rd ed. York, McGraw-Hill, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.