@book { SelbstdarstellungundWohlbefinden,
    title = "Selbstdarstellung und Wohlbefinden",
    author = "Caroline {Spielhagen}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1099568"
}