1. ITGI (2007), COBIT 4.1 Control Objectives for Information Technology. IT Governance Institute, available at: www.itgi.org.
2. Pederiva, A. (2003), “The COBIT maturity model in a vendor evaluation case”, Information Systems Control Journal, p. 4.
3. Simonsson, M. (2007), Model‐Based IT Governance Maturity Assessments With COBIT, available at: www.ee.kth.se/php/modules/publications/reports/2007/IR‐EE‐ICS_2007_026.pdf (accessed 29 December 2010).