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Syne, Frederick. "Life of Percy Bysshe Shelley." Chicago: World Book Encyclopedia. 2009 ed.
Titus, Nathan. "Percy Shelley Poems." American Literature.org. 2012. ed
Zimmerman, Michael. "Percy Bysshe Poetry." Poetry.org. 16 Mar. 2010. ed
Syne, Frederick. "Life of Percy Bysshe Shelley." Chicago: World Book Encyclopedia. 2009 ed.
Titus, Nathan. "Percy Shelley Poems." American Literature.org. 2012. ed
Zimmerman, Michael. "Percy Bysshe Poetry." Poetry.org. 16 Mar. 2010. ed