Levin. Statistics for Management. Pearson.
Lua i Stíl Chicago (17ú heag.)Levin. Statistics for Management. Noida: Pearson.
Lua MLA (9ú heag.)Levin. Statistics for Management. Pearson.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.