Osterlind, S. J. (1983). Test item bias. Sage Publications.
Lua i Stíl Chicago (17ú heag.)Osterlind, Steven J. Test Item Bias. Beverly Hills: Sage Publications, 1983.
Lua MLA (9ú heag.)Osterlind, Steven J. Test Item Bias. Sage Publications, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.