-- Reinhold Zippelius, Introduction to German Legal Methods, Trans. Kirk W. Junker & P. Matthew Roy, Carolina Academic Press, 2008.
-- P. Matthew Roy et al, U.S. Legal Practice Handbook, edited by Kirk W. Junker, De Gruyter, 2018 (Chapter 9 on U.S. Income Taxation).
-- P. Matthew Roy, Recovering Art Looted by the Nazis: A Comparative View of Two Cases, 53 UIC J. Marshall L. Rev. 547 (2021)