@book { UpperclassEnglishinNaturalandAudiovisualDialogue,
    title = "Upper-class English in Natural and Audiovisual Dialogue",
    author = "Luca {Valleriani}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b18768",
    url = "https://www.peterlang.com/document/1069068"
}