@book{ BA05041337,
  author    = "Phillips, William D.",
  title     = "Enrique IV and the crisis of fifteenth-century Castile, 1425-1480",
  publisher = "Mediaeval Academy of America",
  year      = "1978",
  series    = "Speculum anniversary monographs",
  number    = "3",
  URL       = "http://ci.nii.ac.jp/ncid/BA05041337"
}