| 1. | Harris, Shon, All-in-one CISSP Exam Guide, McGraw Hill Osborne, Emeryville, California, |
| (3rd Edition, 2005) |
| 2. | Silberschatz, Galvin, Gagne, Operating System Concepts, John Wley & Sons, Inc., 2002. |
| ISBN 0-471-41743-2 |
| 3. | William Stallings, Cryptography and Network Security: Principles and Practice, Prentice Hall, |
| (3rd Edition, 2002) |
| 4. | William Stallings, Operating Systems: Internal and Design Principles, , Prentice Hall, |
| (4rd Edition, 2001) |