@book { TeachinginMoralandDemocraticEducation,
    title = "Teaching in Moral and Democratic Education",
    author = "Wiel {Veugelers} and Fritz {Oser}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1094894"
}