APA Style
      Rosenberg, P. et al (2015).
    Linguistic Construction of Ethnic Borders (Ed. 1).
    Bern:
  Peter Lang International Academic Publishers.
  
MLA Style
      Rosenberg, Peter. et al.
    "Linguistic Construction of Ethnic Borders".
    Ed. 1
    Bern:
  Peter Lang International Academic Publishers,
  2015.
  Text.