@book { WeiterbildungundSchulentwicklung,
    title = "Weiterbildung und Schulentwicklung",
    author = "Susanne {Rüegg}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1091059"
}