Berger, Sheila, Thomas Hardy and Visual Structure: Framing, Disruption, Process, New York University Press, 1990, p. 100.

Buckler, William E., The Poetry of Thomas Hardy: A Study in Art and Ideas, New York University Press, 1983, pp. 255-59.

Carpenter, Richard, "Chapter Four: Poems, Verses, and The Dynasts," in Thomas Hardy, Twayne's English Author Series, No. 13, Twayne Publishers, 1964, p. 165.

Casagrande, Peter, "Pessimism," in Oxford Reader's Companion to Hardy, edited by Norman Page, Oxford University Press, 2000, pp. 306-07.

Hardy, Thomas, "The Darkling Thrush," in The Norton Anthology of Poetry, 3d ed., edited by Alexander W. Allison, et al., W. W. Norton, 1983, p. 846.

Harvey, Geoffrey, "Thomas Hardy: Moments of Vision," in Critical Essays on Thomas Hardy's Poetry, edited by Harold Orel, G. K. Hall, 1995, pp. 35-47.

Perkins, David, "Hardy and the Poetry of Isolation," in ELH, Vol. 26, 1959, pp. 253-70. Taylor, Dennis, "Hardy as a Nineteenth-Century Poet," in The Cambridge Companion to Thomas Hardy, edited...