@book { PsychosozialeLebenslagenminderjhrigerMtter,
    title = "Psychosoziale Lebenslagen minderjähriger Mütter",
    author = "Friederike {Bürmann}",
    year = "2001",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832443931",
    url = "https://m.diplom.de/document/220002"
}