Draper, N. R., & Smith, H. (1981). Applied regression analysis (2nd ed.). John Wiley & Sons, Inc.
Cita Chicago (17th ed.)Draper, Norman Richard, i Harry Smith. Applied Regression Analysis. 2nd ed. New York: John Wiley & Sons, Inc, 1981.
Cita MLA (9th ed.)Draper, Norman Richard, i Harry Smith. Applied Regression Analysis. 2nd ed. John Wiley & Sons, Inc, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.