McClave, J. T., & Sincich, T. (2000). Statistics (8th ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)McClave, James T., agus Terry Sincich. Statistics. 8th ed. Upper Saddler River, N.J.: Prentice Hall, 2000.
Lua MLA (8ú heag.)McClave, James T., agus Terry Sincich. Statistics. 8th ed. Prentice Hall, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.