@book { DiebestenChecklistenzurKostensenkungimVertrieb,
    title = "Die besten Checklisten zur Kostensenkung im Vertrieb",
    author = "Peter R. {Preißler}",
    year = "2016",
    publisher = "Vahlen",
    address = "München, Deutschland",
    url = "https://vahlen.openpublishing.com/document/1220979"
}