Lennox, C. (2005) Audit Quality and Executive Officers’ Affiliations with CPA Firms. Journal of Accounting and Economics, 39, 201-231. http://dx.doi.org/10.1016/j.jacceco.2003.12.002
 Wang, Q., Wong, T.J. and Xia, L. (2008) State Ownership, the Institutional Environment, and Auditor Choice. Journal of Accounting and Economics, 46, 112-134. http://dx.doi.org/10.1016/j.jacceco.2008.04.001
 Chen, J.K. and Chen, H.W. (2009) Company Characters, Audit Demand and Factors Driving Local Accounting Firm Selection. The Theory and Practise of Finance and Economic, 30, 62-66.
 Du, X.Q., Zhou, Z.J. and Du, Y.J. (2011) Political Connections, Regional Preference of Audit Choice and Audit Opinions. Auditing Research, 2, 78-86.