Bernstein, L. (1959). The professor and his sister: By Leon Bernstein. Lincolns-Prager.
Lua i Stíl Chicago (17ú heag.)Bernstein, Leon. The Professor and His Sister: By Leon Bernstein. London: Lincolns-Prager, 1959.
Lua MLA (8ú heag.)Bernstein, Leon. The Professor and His Sister: By Leon Bernstein. Lincolns-Prager, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.