@book { TheImportanceofCodesofEthics,
    title = "The Importance of Codes of Ethics",
    subtitle = "Examination of the Need of Business Ethics and the Efficient Usage of Codes of Ethics for Good Corporate Governance",
    author = "Anna {Mika}",
    year = "2011",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783842815131",
    url = "https://m.diplom.de/document/228516"
}