Barkan, L. What did Shakespeare read?: Leonard Barkan. The Cambridge companion to Shakespeare.(2003).
Lua i Stíl Chicago (17ú heag.)Barkan, Leonard. "What Did Shakespeare Read?: Leonard Barkan." The Cambridge Companion to Shakespeare.(2003) .
Lua MLA (8ú heag.)Barkan, Leonard. "What Did Shakespeare Read?: Leonard Barkan." The Cambridge Companion to Shakespeare.(2003), .
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