@incollection{E910001-063,
  author 	 = {William Butler Yeats},
  title 	 = {On a Political Prisoner},
  editor 	 = {Richard J. Finneran},
  booktitle 	 = {The Collected Poems of W. B. Yeats},
  publisher 	 = {Macmillan Press},
  address 	 = { London},
  date 	 = {1991},
  pages 	 = {186}
}