@book { Elaspectoverbalenelauladeespaolcomolenguaextranjera,
    title = "El aspecto verbal en el aula de español como lengua extranjera",
    author = "Emma {García Sanz}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b14243",
    url = "https://www.peterlang.com/document/1110707"
}