@book { WievielVitaminCstecktinPaprika,
    title = "Wieviel Vitamin C steckt in Paprika?",
    author = "Tim {Eichler}",
    year = "2019",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/457791"
}