1. Abschlussprüfer in Deutschland (2020). https://www.apasbafa.bund.de/APAS/DE/Home/home_node.html. Accessed 18 Feb 2020
2. Abschlussprüferaufsichtsbehörde Österreichs (2020). https://www.apab.gv.at/. Accessed 18 Feb 2020
3. Accountancy Europe Report (2019) State of affairs after the implementation of the 2014 audit reform
4. Akdağ M (2014) Türkiye'nin iktisadi ve içtimai tarihi, Yapı Kredi Yayınları, 2nd ed. Turkey
5. Alles M, Kogan A, Vasarhelyi M, Warren JD (2006) Guarding the auditing guards. Strat Financ 87(8):30–35