@book { HandlungsorientierungimFokus,
    title = "Handlungsorientierung im Fokus",
    author = "Dagmar {Abendroth-Timmer} and Daniela {Elsner} and Christiane {Lütge}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1106388"
}