Thorpe, E. (2006). Pearson General Knowledge Manual, 2006. Pearson Education.
Lua i Stíl Chicago (17ú heag.)Thorpe, Edger. Pearson General Knowledge Manual, 2006. Delhi: Pearson Education, 2006.
Lua MLA (9ú heag.)Thorpe, Edger. Pearson General Knowledge Manual, 2006. Pearson Education, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.