@inbook{butt1952a,
  address   = {London},
  author    = {Butt, Audrey},
  booktitle = {The Nilotes of the Anglo-Egyptian Sudan and Uganda},
  key       = {Butt (1952a)},
  publisher = {Oxford Univ. Press; International African Inst. (IAI)},
  series    = {Ethnographic survey of Africa, East Central Africa},
  title     = {The Luo of Kenya},
  volume    = {4},
  year      = {1952}
}