NEWTON, P. E. (2014). Validity in educational & Psychological assessment. Sage Publication.
Lua i Stíl Chicago (17ú heag.)NEWTON, Paul E. Validity in Educational & Psychological Assessment. Sage Publication, 2014.
Lua MLA (9ú heag.)NEWTON, Paul E. Validity in Educational & Psychological Assessment. Sage Publication, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.