Barrett, J. (2000). Test Yourself ! test your aptitude,personality............... Kogan Page.
Lua i Stíl Chicago (17ú heag.)Barrett, Jim. Test Yourself ! Test Your Aptitude,personality............... New Delhi: Kogan Page, 2000.
Lua MLA (9ú heag.)Barrett, Jim. Test Yourself ! Test Your Aptitude,personality............... Kogan Page, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.