@book { ProzessdesLieferantenmanagements,
    title = "Prozess des Lieferantenmanagements",
    author = "Tamara {Fritz}",
    year = "2012",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656167846",
    url = "https://www.hausarbeiten.de/document/191710"
}