Cumberland, M., & Cumberland, M. (1948). The frenzy of chess.
Lua i Stíl Chicago (17ú heag.)Cumberland, Marten, agus Martin Cumberland. The Frenzy of Chess. 1948.
Lua MLA (9ú heag.)Cumberland, Marten, agus Martin Cumberland. The Frenzy of Chess. 1948.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
