TATA McGRAWHILL. (2006). GENERAL KNOWLEDGE REFRESHER.
Lua i Stíl Chicago (17ú heag.)TATA McGRAWHILL. GENERAL KNOWLEDGE REFRESHER. 2006.
Lua MLA (9ú heag.)TATA McGRAWHILL. GENERAL KNOWLEDGE REFRESHER. 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.