@book { GenogrammeinderberatendenTtigkeit,
    title = "Genogramme in der beratenden Tätigkeit",
    author = "Stefanie {Gast}",
    year = "2008",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783836612814",
    url = "https://m.diplom.de/document/225769"
}