@book { Organisationslernenim21Jahrhundert,
    title = "Organisationslernen im 21. Jahrhundert",
    subtitle = "Festschrift für Harald Geißler",
    author = "Charlotte {Heidsiek} and Jendrik {Petersen}",
    year = "2010",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1135578"
}