@book { MiaunddiePerlenkettenmacherin,
    title = "Mia und die Perlenkettenmacherin",
    author = "Danka {Todorova} and Ulrike {Mülhaupt}",
    year = "2020",
    publisher = "via tolino media",
    address = "München, Deutschland",
    url = "https://tolino.openpublishing.com/document/1001045"
}