Sharpe, T. (1990). <A >epopeia de Mr. Skullion. Teorema.
Lua i Stíl Chicago (17ú heag.)Sharpe, Tom. <A >epopeia De Mr. Skullion. Teorema, 1990.
Lua MLA (8ú heag.)Sharpe, Tom. <A >epopeia De Mr. Skullion. Teorema, 1990.
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