@book { StudiesonEnglishModality,
    title = "Studies on English Modality",
    author = "Anastasios {Tsangalidis} and Roberta {Facchinetti}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1106331"
}