@incollection{E910001-057,
  author 	 = {William Butler Yeats},
  title 	 = {Easter, 1916},
  editor 	 = {William Butler Yeats},
  booktitle 	 = {Easter, 1916 (A Poem)},
  publisher 	 = {Privately printed by Clement Shorter},
  address 	 = { London},
  date 	 = {1916},
  pages 	 = {5pp}
}