O Brien, D. (2001). Derek O`Brien`s book of 1500 questions. Rila O Brien.
Lua i Stíl Chicago (17ú heag.)O Brien, Derek. Derek O`Brien`s Book of 1500 Questions. Kolkata: Rila O Brien, 2001.
Lua MLA (9ú heag.)O Brien, Derek. Derek O`Brien`s Book of 1500 Questions. Rila O Brien, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.