Arens, Alvin A. et al. Auditing and Assurance Services: An Integrated Approach. 15th ed. Boston, Mass: Pearson. Web. <http://eu01.alma.exlibrisgroup.com/view/action/uresolver.do?operation=resolveService&package_service_id=3582626570002215&institutionId=2215&customerId=2200>.
Beasley, Mark S. Auditing Cases: An Interactive Learning Approach. 6th ed. Boston: Pearson. Print.
Den Norske revisorforening, ed. Revisors HÄndbok 2018. [39. utg.]. Bergen: Fagbokforl. Print.