@book { Zigarettenkonsumerklren,
    title = "Zigarettenkonsum erklären",
    author = "Lidia {Lüttin}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783640974474",
    url = "https://www.hausarbeiten.de/document/176350"
}