@book { Elusodelpretritoimperfectodeindicativoenelespaolcoloquial,
    title = "El uso del pretérito imperfecto de indicativo en el español coloquial",
    author = "Carolin {Kohl}",
    year = "2020",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b17322",
    url = "https://www.peterlang.com/document/1111323"
}