1. ISO 19011:2018–Guidelines for Auditing Management Systems,2018
2. ISO 45001:2018—Occupational Health and Safety Management Systems—Requirements with Guidance for Use,2018
3. CSA Z1000—Occupational Health and Safety Management,2014
4. Safety audits: Comparing three types of assessments;Esposito;Prof. Saf.,2009
5. OSHA Survey Finds 85 Percent of Employers do Self-Audits of Safety and Health Conditions in Workplaces,1999