@book { FhrungundQualittsmanagementinberuflichenSchulen,
    title = "Führung und Qualitätsmanagement in beruflichen Schulen",
    author = "Cornelia {Wagner}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107698"
}