Caygill, H. Shakespeare's monster of nothing: Howard Caygill. Philosophical Shakespeares.(2000).
Lua i Stíl Chicago (17ú heag.)Caygill, Howard. "Shakespeare's Monster of Nothing: Howard Caygill." Philosophical Shakespeares.(2000) .
Lua MLA (8ú heag.)Caygill, Howard. "Shakespeare's Monster of Nothing: Howard Caygill." Philosophical Shakespeares.(2000), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.