Smithson, M. (2000). Statistics with confidence. Sage.
Lua i Stíl Chicago (17ú heag.)Smithson, Michael. Statistics with Confidence. London: Sage, 2000.
Lua MLA (9ú heag.)Smithson, Michael. Statistics with Confidence. Sage, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.