@book { GettingStartedinPublicRelationsDieerstendreiBerufsjahre,
    title = "Getting Started in Public Relations: Die ersten drei Berufsjahre",
    author = "Patrick {Schlager}",
    year = "2010",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/227600"
}