Reference: Cerulli 1947

Cerulli, Enrico. 1947. Three Berta Dialects in Western Ethiopia. Africa XVII(3). 156–169.

@article{cerulli1947berta,
  author  = {Cerulli, Enrico},
  journal = {Africa},
  number  = {3},
  pages   = {156–169},
  title   = {Three Berta Dialects in Western Ethiopia},
  volume  = {XVII},
  year    = {1947}
}