@book { Italianoyespaol,
    title = "Italiano y español.",
    author = "Alicia {López Márquez} and Fernando {Fernando Molina Castillo}",
    year = "2020",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b16703",
    url = "https://www.peterlang.com/document/1111320"
}