@book { DiegroeLiebeSofindenSieIhreTraumfrau,
    title = "Die große Liebe: So finden Sie Ihre Traumfrau",
    author = "Jan {van Amstel}",
    year = "2013",
    publisher = "dotbooks Verlag",
    address = "München, Deutschland",
    doi = "10.3239/9783955203382",
    url = "https://m.dotbooks.de/document/229758"
}