@book{hualde2004basque,
  title={Basque phonology},
  author={Hualde, Jos{\'e} Ignacio},
  year={2004},
  publisher={Routledge}
}

@book{de2008standard,
  title={Standard Basque: A progressive grammar},
  author={De Rijk, Rudolf PG and De Coene, Armand},
  year={2008},
  publisher={Mit Press Cambridge, MA}
}

@article{hualde2010goizueta,
  title={Goizueta Basque},
  author={Hualde, Jos{\'e} Ignacio and Lujanbio, Oihana and Zubiri, Juan Joxe},
  journal={Journal of the International Phonetic Association},
  volume={40},
  number={1},
  pages={113--127},
  year={2010},
  publisher={Cambridge University Press}
}

@book{Saltarelli1988,
  address    = {London},
  author     = {Saltarelli, Mario with Miren Azkarate,  and Farwell, David and de Urbina, Jon Ortiz and Oñederra, Lourdes},
  publisher  = {Croom Helm},
  series     = {Croom Helm Descriptive Grammars},
  title      = {Basque},
  year       = {1988},
  iso_code   = {eus},
  olac_field = {phonology; morphology; syntax; typology; general_linguistics; semantics; phonetics},
  wals_code  = {bsq}
}

@book{Trask2008,
  author     = {R. L. Trask},
  pages      = {418},
  publisher  = {University of Sussex},
  title      = {Etymological Dictionary of Basque},
  year       = {2008}
}