REIN, D. P. (1985). Grolier advanced english course 4. Grolier International.
Lua i Stíl Chicago (17ú heag.)REIN, David P. Grolier Advanced English Course 4. (sl): Grolier International, 1985.
Lua MLA (9ú heag.)REIN, David P. Grolier Advanced English Course 4. Grolier International, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.