@book { Sarmientodefrenteyperfil,
    title = "Sarmiento de frente y perfil",
    author = "William H. {Katra}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    url = "https://www.peterlang.com/document/1082448"
}