- ^ Driscoll, Molly (2012-06-12). "The 100 best books of all time". The Christian Science Monitor. Retrieved 2012-10-20.
- ^ PESSOA, Fernando, The Book of Disquietude, tr. Richard Zenith, Carcanet Press, 1991, p. xi.
- ^ STEINER, George, «A man of many parts», The Observer, Sunday, 3 June 2001. http://www.guardian.co.uk/books/2001/jun/03/poetry.features1.
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