@book { OrganisationskulturundLeadership,
    title = "Organisationskultur und Leadership",
    author = "Edgar H. {Schein} and Peter {Schein}",
    year = "2018",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1217961"
}