ROBERTS , E. (1996). FOCUS ON RUSSIA.
Lua i Stíl Chicago (17ú heag.)ROBERTS , ELIZABET. FOCUS ON RUSSIA. 1996.
Lua MLA (9ú heag.)ROBERTS , ELIZABET. FOCUS ON RUSSIA. 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.