Doyle, A. C. (1981). Complete Sherlock Holmes (1a. ed.). Penguin Books.
Lua i Stíl Chicago (17ú heag.)Doyle, Arthur Conan. Complete Sherlock Holmes. 1a. ed. Londres: Penguin Books, 1981.
Lua MLA (9ú heag.)Doyle, Arthur Conan. Complete Sherlock Holmes. 1a. ed. Penguin Books, 1981.
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