Steel, D. (1979). Summer's end. Sphere.
Lua i Stíl Chicago (17ú heag.)Steel, Daniel. Summer's End. London: Sphere, 1979.
Lua MLA (9ú heag.)Steel, Daniel. Summer's End. Sphere, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.