@book { KompetenzVertrauenundKooperation,
    title = "Kompetenz, Vertrauen und Kooperation",
    subtitle = "Eine experimentelle Studie",
    author = "Isabella {Hatak}",
    year = "2011",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b13540",
    url = "https://www.peterlang.com/document/1068151"
}