1) Alighieri, Dante.
The Inferno,
Canto XXVI, translated by John Ciardi. New York: American Library 1954
2) Bergman, R. J.
Browning’s Duke.
New York, New York: R. Rosen Press, 1972
3) Culler, A. Dwight.
Monodrama and the Dramatic Monologue.
PMA: Publications of the Modern Language Association of America, New York: Vol. 90, l975
4) Culler, A. Dwight.
The Poetry of Tennyson.
New Haven, Ct: Yale University Press, 1977
5) Hassett, Constance W.
The Elusive Self in the Poetry of Robert Browning
. Athens, Ohio: Ohio University Press, 1982
6) Langbaum, Robert.
The Poetry of Experience.
London: Chatto and Windus, Ltd., 1975
7) Kilham, John.
Critical Essays on the Poetry of Tennyson.
New York: Barnes & Noble, Inc. 1960
8) Ricks, Christopher.
A Collection of Poems by Alfred Tennyson
. Garden City, New York: Doubleday and Co., 1972
9) Smith, Grover.
T.S. Eliot’s Poetry and Plays.
Chicago: The University of Chicago Press ,1982
10) Strange,C. Robert.
The Poetical Works of Robert Browning.
Boston: Houghton Miffin Co
11) Tucker, Herbert F.
Tennyson and the Doom of Romanticism.
Cambridge, Mass: Harvard University Press, 1988
12) Wheatcroft, Andrew.
The Tennyson Album:
Biography in Original Photographs. London: Routledge and Kegan Paul, 1980
