@misc{ISO9001,
    title="ISO 9001:2015 Quality Management Systems",
    publisher="International Organization for Standardization (ISO)",
    year=2015
}
@misc{ISO14001,
    title="ISO 14001:2015 - Environmental Management Systems",
    publisher="International Organization for Standardization (ISO)",
    year=2015
}
@misc{ISO27001,
    title="ISO 27001:2013 - Information Technology",
    publisher="International Organization for Standardization (ISO)",
    year=2013
}
@misc{ISO31000,
    title="ISO 31000:2018 - Risk Management Guidelines",
    publisher="International Organization for Standardization (ISO)",
    year=2018
}