Mackay, I. (2000). Asking questions (2nd.). Universities Press.
Lua i Stíl Chicago (17ú heag.)Mackay, Ian. Asking Questions. 2nd. Hyderabad: Universities Press, 2000.
Lua MLA (9ú heag.)Mackay, Ian. Asking Questions. 2nd. Universities Press, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.