Programming the Perl DBI: Database programming with Perl
Programming Web Services with Perl
Perl Cookbook, Second Edition
Perl Best Practices: Standards and Styles for Developing Maintainable Code
Learning Perl: Making Easy Things Easy and Hard Things Possible
Mastering Perl: Creating Professional Programs with Perl
Programming Perl: Unmatched power for text processing and scripting
Mastering Algorithms with Perl: Practical Programming Through Computer Science
Perl & LWP