@book { SprachphilosophieundSprachpsychologie,
    title = "Sprachphilosophie und Sprachpsychologie",
    author = "Gerhard {Gelbmann}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1098272"
}