@book { Identidadylanguagecrossing,
    title = "Identidad y language crossing",
    author = "Pedro {Alvarez Morsquera}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    doi = "10.3726/978-3-0351-0493-6",
    url = "https://www.peterlang.com/document/1052860"
}