Tom Christiansen and Nathan Torkington, The Perl Cookbook, O'Reilly and Associates, 1998. ISBN 1-56592-243-3.
Jeffrey Friedl, Mastering Regular Expressions, O'Reilly and Associates, 1997. ISBN 1-56592-257-3.
Joseph N. Hall and Randal L. SchwartzEffective Perl Programming, Addison-Wesley, 1997. ISBN 0-20141-975-0.