Draper, N. R., & Smith, H. (1981). Applied regression analysis (2nd ed.). John Wiley & Sons, Inc.
Lua i Stíl Chicago (17ú heag.)Draper, Norman Richard, agus Harry Smith. Applied Regression Analysis. 2nd ed. New York: John Wiley & Sons, Inc, 1981.
Lua MLA (9ú heag.)Draper, Norman Richard, agus Harry Smith. Applied Regression Analysis. 2nd ed. John Wiley & Sons, Inc, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.