1Bloom, H. 1970. Yeats [M]. New York: Oxford University Press.
2Bushrui, S. B. & T. Prentki. 1989. An International Companion to the Poetry of W. B. Yeats [M]. Gerrards Cross, Buckinghamshire: Colin Smythe Limited.
3Cullingford, E. B. 1996. Gender and History in Yeats's Love Poetry [ M ]. Syracuse, N. Y.: Syracuse University Press.
4Parkinson, T. 1951. W. B. Yeats, Self-Critic: A Study of His Early Verse [M]. Berkeley & Los Angeles: University of California Press.
5Rich, A. 1979. On Lies, Secrets, and Silence: Selected Prose 1966- 1978 ~M]. New York: Norton.
6Thuent, M. H. 1989. The folklore of Irish nationalism [C]//T. E. Hachey & L. J. McCaffrey. Irish Nationalism. Lexington, Ky.: The University Press of Kentucky.
7Yeats, W. B. 1988. The Collected Works of W. B. Yeats, V.VI [M]. William H. O'Donnell. Ed. New York: Macmillan Publishing Company.