Norris, F. (1958). The Octopus. Bantam Books.
Lua i Stíl Chicago (17ú heag.)Norris, Frank. The Octopus. New York, Estados Unidos: Bantam Books, 1958.
Lua MLA (9ú heag.)Norris, Frank. The Octopus. Bantam Books, 1958.
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