@book { BestPracticesinCanteenManagementandOperation,
    title = "Best Practices in Canteen Management and Operation",
    author = "Joefel {Horca}",
    year = "2019",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://m.hausarbeiten.de/document/497949"
}