| title | ISBN-13 | year of publication |
|---|---|---|
| Contact Has Begun | 978-1-56170-506-1 | 1998 |
| Contact Has Begun: The True Story of a Journalist's Encounter with Alien Beings | 978-1-57983-014-4 | 1998 |
| Meetings with Paul: An Atheist Discovers His Guardian Angel | 978-1-57983-021-2 | 2008 |
| The Challenge of Contact: A Mainstream Journalist's Report on Interplanetary Diplomacy | 978-1-57983-009-0 | 2001 |
P.K. · Philip Kirby · Philipp Karpf · Philipp Korff · Philippe Krief · Phillip H. Krapf