@book { GruppenfickeninderSEXWG,
    title = "Gruppenficken in der SEX-WG",
    author = "Cheyenne {Silver}",
    year = "2024",
    publisher = "roter mund verlag",
    address = "Mannheim, Deutschland",
    url = "https://rotermundverlag.de/document/1513522"
}