@book { MitStolzausderAbhngigkeit,
    title = "Mit Stolz aus der Abhängigkeit",
    author = "Martin {Fleckenstein} and Marlis {Fleckenstein-Heer} and Susanne {Leiberg} and Willi {Breit} and Thomas {Lüddeckens}",
    year = "2020",
    publisher = "Schattauer",
    address = "Stuttgart, Deutschland"
}