| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Fundamentals of Petroleum | 978-0-88698-162-4 (0-88698-162-X) | 1997 | Petroleum Extension Service (Petex) |
| The Auxiliaries Unit 1, Lesson 9 | 978-0-88698-184-6 (0-88698-184-0) | 1999 | |
| The Bit, Unit 1, Lesson 2 | 978-0-88698-167-9 (0-88698-167-0) | 1995 | |