1. ISO 31000:2009—Risk Management—Principles and Guidelines,2009
2. ISO 9001 Quality Management Systems—Requirements,2015
3. ISO 14001 Environmental Management Systems—Requirements with Guidance for Use,2015
4. BS OHSAS 18001 Occupational Health and Safety Managementhttp://www.bsigroup.com/en-GB/ohsas-18001-occupational-health-and-safety/