@book { RegencyBridesEinegeheimnisvolleLady,
    title = "Regency Brides - Eine geheimnisvolle Lady",
    subtitle = "Roman, Band 4",
    author = "Catherine {Coulter} and Anke {Frings}",
    year = "2023",
    publisher = "dotbooks Verlag",
    address = "München, Germany",
    url = "https://www.dotbooks.de/document/1262648"
}