Hanley, J. (1978). The Welsh Sonata: Variations on a theme. Horizon Press.
Lua i Stíl Chicago (17ú heag.)Hanley, James. The Welsh Sonata: Variations on a Theme. New York: Horizon Press, 1978.
Lua MLA (8ú heag.)Hanley, James. The Welsh Sonata: Variations on a Theme. Horizon Press, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.