Snedecor, G. (1994). Statistical methods (8th.). Affiliated East West International.
Lua i Stíl Chicago (17ú heag.)Snedecor, George. Statistical Methods. 8th. New Delhi: Affiliated East West International, 1994.
Lua MLA (9ú heag.)Snedecor, George. Statistical Methods. 8th. Affiliated East West International, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.