Gravetter, F. J., & Wallnau, L. B. (2009). Statistics for the behavioral sciences (8th ed.). Wadsworth/Cengage Learning.
Lua i Stíl Chicago (17ú heag.)Gravetter, Frederick J., agus Larry B. Wallnau. Statistics for the Behavioral Sciences. 8th ed. Belmont, Calif: Wadsworth/Cengage Learning, 2009.
Lua MLA (9ú heag.)Gravetter, Frederick J., agus Larry B. Wallnau. Statistics for the Behavioral Sciences. 8th ed. Wadsworth/Cengage Learning, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.