| title | ISBN-13 | year of publication |
|---|---|---|
| Design and Analysis of Computer Communication Networks | 978-0-07-000697-3 | 1981 |
| Design and Analysis of Computer Communications Networks | 978-0-07-066161-5 | 1985 |
| Network and Internet Security | 978-0-12-045595-9 | 1996 |
| Secure Commerce on the Internet | 978-0-12-045597-3 | 1996 |