@book { GoldinsDepotInvestitionsmglichkeitenfrdenAnleger,
    title = "Gold ins Depot! Investitionsmöglichkeiten für den Anleger",
    author = "Paul {Lakmayer}",
    year = "2015",
    publisher = "BACHELOR + MASTER PUBLISHING",
    address = "Hamburg, Deutschland",
    url = "https://m.bachelor-master-publishing.de/document/297969"
}