@incollection{E910001-056,
  author 	 = {William Butler Yeats},
  title 	 = {The Old Age of Queen Maeve},
  editor 	 = {William Butler Yeats},
  booktitle 	 = {Later Poems},
  publisher 	 = {Macmillan},
  address 	 = {London},
  date 	 = {1922},
  pages 	 = {51–58}
}