@book { SammelnZurBedeutungeinesKulturmusters,
    title = "Sammeln: Zur Bedeutung eines Kulturmusters",
    author = "Martina {Brenner}",
    year = "2009",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/227459"
}