@book { KleinesValenzwrterbuchniederdeutscherVerben,
    title = "Kleines Valenzwörterbuch niederdeutscher Verben",
    author = "Heinz-Wilfried {Appel}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1109255"
}