@book{mayer1950,
  author    = {Mayer, P.},
  key       = {Mayer (1950)},
  publisher = {Cape Town: Oxford Univ. Press},
  series    = {Rhodes-Livingstone papers},
  title     = {Gusii bridewealth law and custom},
  volume    = {18},
  year      = {1950}
}