@book { SwissMaid,
    title = "Swiss Maid",
    subtitle = "Verborgene Kräfte und Schätze in der Erfolgsgeschichte der Schweiz",
    author = "Margrit V. {Zinggeler}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    doi = "10.3726/b13647",
    url = "https://www.peterlang.com/document/1057080"
}