@book { DieLohnhheundLohnstreuungimNonprofitSektor,
    title = "Die Lohnhöhe und Lohnstreuung im Nonprofit-Sektor",
    author = "Astrid {Haider}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b13898",
    url = "https://www.peterlang.com/document/1068453"
}