Currey, R.N.
Oxford University Press, 1946
Buku Teks
Yeats, W.B., author
Everyman's Library, 1992
Buku Referensi
Lerner, Laurence D., author
Secker & Warburg, 1984
Buku Teks
Mole, John, author
Sinclair-Stevenson, 1995
Buku Teks
edited with anintroduction by I.M. Parsons
Viking Press, 1965
Buku Teks