@book { Elternseinwiegehtdas,
    title = "Eltern sein - wie geht das?",
    author = "Romy {Kockott}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836617048",
    url = "https://m.diplom.de/document/226019"
}