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Washington Irving (2015). “The Sketch Book of Geoffrey Crayon, Gent. – The Complete Collection: The Legend of Sleepy Hollow, Rip Van Winkle, The Voyage, Roscoe, A Royal Poet, A Sunday in London and many more (Illustrated)”, p.133, e-artnow
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William Shakespeare (2013). “Making Sense of Hamlet! a Students Guide to Shakespeare's Play (Includes Study Guide, Biography, and Modern Retelling)”, p.240, BookCaps Study Guides
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