@book { SprachbuchwandelEndedes20Jahrhunderts,
    title = "Sprachbuchwandel Ende des 20. Jahrhunderts",
    author = "Mohammad Hossein {Khadjehzadeh}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1093818"
}