Leon Alexis. (2008). erp Demystified. McGrawHill.
Lua i Stíl Chicago (17ú heag.)Leon Alexis. Erp Demystified. New Delhi: McGrawHill, 2008.
Lua MLA (9ú heag.)Leon Alexis. Erp Demystified. McGrawHill, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.