@book { GrenzeundLiebeWiegesundeIchGrenzenzuMitgefhlEmpathieundLiebefhren,
    title = "Grenze und Liebe. Wie gesunde Ich-Grenzen zu Mitgefühl, Empathie und Liebe führen",
    author = "Klaus {Blaser}",
    year = "2017",
    publisher = "BACHELOR + MASTER PUBLISHING",
    address = "Hamburg, Deutschland",
    url = "https://m.bachelor-master-publishing.de/document/365502"
}