@book { UnterwegsWegenachSantiagoWegezumGlck,
    title = "Unterwegs. Wege nach Santiago, Wege zum Glück",
    author = "Katharina {John} and Götz {Loepelmann}",
    year = "2013",
    publisher = "hey! publishing",
    address = "München, Deutschland",
    doi = "10.3239/9783942822213",
    url = "https://www.heypublishing.com/document/208806"
}