References
- KPMG. 2011. KPMG International Survey of Corporate Responsibility Reporting 2011. Amsterdam: KPMG International.
- Simnett, R., A. Vanstraelen, and W. F. Chua. 2009. “Assurance on Sustainability Reports: An International Comparison.” The Accounting Review 84 (3): 937–967. doi: 10.2308/accr.2009.84.3.937