Barrett, J., & Willams, G. (2002). Test your own aptitude. Kogan Page.
Lua i Stíl Chicago (17ú heag.)Barrett, Jim, agus Geoff Willams. Test Your Own Aptitude. New Delhi: Kogan Page, 2002.
Lua MLA (8ú heag.)Barrett, Jim, agus Geoff Willams. Test Your Own Aptitude. Kogan Page, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.