@book { UnternehmensleitbilderimVergleich,
    title = "Unternehmensleitbilder im Vergleich",
    author = "Monika {Knassmüller}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b14000",
    url = "https://www.peterlang.com/document/1068539"
}