@book { MotivationundVolition,
    title = "Motivation und Volition",
    subtitle = "Evaluation eines psychologischen Interventionsprogrammes",
    author = "Karin {Priemuth}",
    year = "2003",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1095056"
}