| title | ISBN-13 | year of publication |
|---|---|---|
| A Pope and a President: John Paul II, Ronald Reagan, and the Extraordinary Untold Story of the 20th Century | 978-1-5414-1045-9 | 2017 |
| A Pope and a President: John Paul II, Ronald Reagan, and the Extraordinary Untold Story of the 20th Century | 978-1-5414-6045-4 | 2017 |
| Takedown: From Communists to Progressives, How the Left Has Sabotaged Family and Marriage | 978-1-942475-10-1 | 2015 |
| The Judge: William P. Clark, Ronald Reagan's Top Hand | 978-1-58617-183-4 | 2007 |
K. D. · K.P. · P.K. · P.P. · Paul D. · Paul K · Paul Kengor · Paul P. · Ph.D.
Ignatius Press · Tantor Audio · WND Books