Crossbooks · Oxford University Press
| title | ISBN-13 (ISBN-10)  | year of publication | 
|---|---|---|
| Breaking The Evangelism Code: Evangelism Today | 978-1-61507-897-4 (1-61507-897-5)  | 2011 | 
| Breaking the Evangelism Code: Evangelism Today | 978-1-61507-898-1 (1-61507-898-3)  | 2011 | 
| Geology of Peru | 978-0-19-509040-6 (0-19-509040-3)  | 2005 |