@book { EinwanderungFrauenarbeitMutterschaft,
    title = "Einwanderung, Frauenarbeit, Mutterschaft",
    author = "Werner {Haug}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1070883"
}