@book { RudolfSteinersPedagogyofImagination,
    title = "Rudolf Steiner’s Pedagogy of Imagination",
    author = "Thomas W. {Nielsen}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1096908"
}