@book { SozialeArbeitmitStraenkinderninGuatemala,
    title = "Soziale Arbeit mit Straßenkindern in Guatemala",
    author = "Carolin {Zobel}",
    year = "2010",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783842805422",
    url = "https://m.diplom.de/document/228081"
}