@book{Ette1995,
  author    = {Ette, Ottmar},
  title     = {Jos{\´e} Mart{\´i} : ap{\´o}stol, poeta, revolucionario ; una historia de su recepci{\´o}n},
  series = {Serie Nuestra Am{\´e}rica},
  volume    = {45},
  journal   = {Serie Nuestra Am{\´e}rica},
  publisher = {Univ. Nacional Aut{\´o}noma de M{\´e}xico},
  address   = {Mexico, D.F.},
  isbn      = {968-36-3941-0},
  pages     = {507 S.},
  year      = {1995},
  language  = {es}
}
@book{OPUS4-26719,
  title     = {Regards sur l'histoire de l'enseignement des langues {\´e}trang{\`e}res : Actes de la Section 8 du Romanistentag de Potsdam du 27 au 30 septembre 1993},
  editor    = {Haßler, Gerda and Christ, Herbert},
  publisher = {Narr},
  address   = {T{\"u}bingen},
  pages     = {211 S.},
  year      = {1995},
  language  = {fr}
}