Copley has authored six textbooks on governmental and not-for-profit accounting and served as Editor of Research in Governmental and Nonprofit Accounting, an academic journal publishing research on the reporting and auditing of governments and not-for-profit entities.
Copley, P.A. and E.B. Douthett. 2009. “Are Assurance Services Provided by Auditors on Initial Public Offerings Influenced by Market Conditions? “ Contemporary Accounting Research. 26 (Summer) 453-476.
Copley, P.A. and E.B. Douthett. 2002. "Simultaneous Estimation of the Supply and Demand of Auditor Reputation in the Market for Initial Public Offerings." Contemporary Accounting Research 19: 49-76.
Copley, P.A., J.J. Gaver, and K.M. Gaver 1995. "Simultaneous Estimation of the Supply and Demand of Differentiated Audits: Evidence from the Municipal Market." Journal of Accounting Research 23(Spring): 137-155.
Copley, P.A., M.S. Doucet and K.M. Gaver 1994. "A Simultaneous Equations Analysis of Quality Review Outcomes and Engagement Fees for Audits of Recipients of Federal Financial Assistance." The Accounting Review 69(January): 244-256.