Gravetter, F. J., & Wallnau, L. B. (2013). Statistics for the behavioral sciences (9th ed.). Wadsworth Cengage Learning.
Lua i Stíl Chicago (17ú heag.)Gravetter, Frederick J., agus Larry B. Wallnau. Statistics for the Behavioral Sciences. 9th ed. Belmont, CA: Wadsworth Cengage Learning, 2013.
Lua MLA (8ú heag.)Gravetter, Frederick J., agus Larry B. Wallnau. Statistics for the Behavioral Sciences. 9th ed. Wadsworth Cengage Learning, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.