@book { AssignmentPreispolitikMethodenderPreisgestaltung,
    title = "Assignment Preispolitik. Methoden der Preisgestaltung",
    author = "Stefan {Landfried}",
    year = "2013",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656574477",
    url = "https://www.hausarbeiten.de/document/266695"
}