@book { Abitur19171971,
    title = "Abitur 1917 - 1971",
    subtitle = "Reflektion des Verhältnisses zwischen Individuum und kollektiver Macht in Abituraufsätzen",
    author = "Peter {Mohler}",
    year = "1978",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1070424"
}