Ritchey, F. (2000). The statistical imagination [ada cd]. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Ritchey, Ferris. The Statistical Imagination [ada Cd]. McGraw-Hill, 2000.
Lua MLA (8ú heag.)Ritchey, Ferris. The Statistical Imagination [ada Cd]. McGraw-Hill, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.