Perkins, David.
The quest of permanence : the symbolism of Wordsworth, Shelley and Keats.
- Cambridge, MA : Harvard University Press, 1965.
Bibliographical footnotes.
Wordsworth, William, 1770-1850. Wordsworth, William, 1770-1850.
Shelly, Percy Bysshe.
Keats, John, 1795-1821. Keats, John, 1795-1821.
Symbolism in literature.