Berry, A. (1977). The iron sun: Crossing the universe through black holes. Cape.
Lua i Stíl Chicago (17ú heag.)Berry, Adrian. The Iron Sun: Crossing the Universe Through Black Holes. London: Cape, 1977.
Lua MLA (8ú heag.)Berry, Adrian. The Iron Sun: Crossing the Universe Through Black Holes. Cape, 1977.
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