DNS & Bind, 2nd Ed., P. Albitz and C. Liu, O'Reilly & Associates, 1996, ISBN 1-56592-236-0.
Linux Kernel Internals, M. Beck, et. al., Addison-Wesley, 1996, ISBN 0-201-87741-4.
Sendmail (Nutshell Handbook), 2nd Ed., B. Costales, O'Reilly & Associates, 1997, ISBN 1-56592-222-0.
Web Security & Commerce, S. Garfinkel and G. Spafford, O'Reilly & Associates, 1997, ISBN 1-56592-269-7.
Practical UNIX & Internet Security, 2nd Ed., S. Garfinkel and G. Spafford, O'Reilly & Associates, 1996, ISBN 1-56592-148-8.
Linux in a Nutshell, J. P. Hekman, O'Reilly & Associates, 1997, ISBN 1-56592-167-4.
TCP/IP Network Administration, 2nd Ed., C. Hunt, O'Reilly & Associates, 1997, ISBN 1-56592-322-7.
Linux Network Administrator's Guide, O. Kirch, O'Reilly & Associates, 1995, ISBN 1-56592-087-2.
Apache: The Definitive Guide, B. Laurie and P. Laurie, O'Reilly & Associates, 1997, ISBN 1-56592-250-6.
System Performance Tuning, M. Loukides, O'Reilly & Associates, 1990, ISBN 0-937175-60-9.
X Window System Administrator's Guide, Volume 8, L. Mui and E. Pearce, O'Reilly & Associates, 1992, ISBN 0-937175-83-8.
HTML: The Definitive Guide, 2nd Ed., C. Musciano and B. Kennedy, O'Reilly & Associates, 1997, ISBN 1-56592-235-2.
Get Certified and Get Ahead, Anne Martinez, McGraw-Hill, 1998, ISBN 0-07-041127-1.
UNIX Power Tools, 2nd Ed., J. Peek, T. O'Reilly and M. Loukides, O'Reilly & Associates, 1997, ISBN 1-56592-260-3.
Linux Encyclopedia: The Complete Linux Guide (Hardcopy HOWTOs), 4th Ed., J. Purcell and Amanda Robinson, WorkGroup Solutions, Inc., 1996, ISBN 0-9644309-2-4
Linux Device Drivers, A. Rubini, O'Reilly & Associates, 1998, ISBN 1-56592-292-1.
Advanced Programming in the UNIX Environment, W. R. Stevens, Prentice-Hall, 1993, ISBN 0-201-56317-7.
UNIX Network Programming, 2nd Ed., Vol. 1, W. R. Stevens, Prentice-Hall, 1998, ISBN 0-13-490012-X.
UNIX Network Programming, 2nd Ed., Vol. 2, W. R. Stevens, Prentice-Hall, 1999, ISBN 0-13-081081-9.
UNIX Internals, U. Vahalia, Prentice-Hall, 1996, ISBN 0-13-101908-2.
Running Linux, 2nd Ed., M. Welsh and L. Kaufman, O'Reilly & Associates, 1996, ISBN 1-56592-151-8.
Programming Perl, 2nd Ed., L. Wall, T. Christiansen and R. Schwartz, O'Reilly & Associates, 1996, ISBN 1-56592-149-6.
