Learning Perl, Second Edition, Randal Schwartz and Tom Christianson, $29.95US, ISBN: 1-56592-284-0.
Programming Perl, Second Edition, Larry Wall, Randal Schwartz and Tom Christianson, $39.95US, ISBN: 1-56592-149-6.
Advanced Perl Programming, Sriram Srinivasan, $34.95US, ISBN: 1-56592-284-0.