Siebert et al. 2002

Siebert and Ralph and Wedekind, Klaus and and Wedekind, Charlotte. 2002. Third S.L.L.E. survey on languages of the Begi/Asosa area. SIL International.

@misc{8224,
  author = {Siebert and Ralph and Wedekind, Klaus and  and Wedekind, Charlotte},
  title  = {Third S.L.L.E. survey on languages of the Begi/Asosa area. SIL International.},
  year   = {2002}
}