Good Resource (book) for RegEx

In order to ramp up quickly on the nitty-gritty of Regular Expressions
in Perl, what will be a good book to start with? I do have moderate
familiarity with RegEx, but am still not using all that Perl's RegEx
engine has to offer. Hence the question.

Thanks,
Rex

• Good Resource (book) for RegEx by Rex
• Re: Good Resource (book) for RegEx by Chas. Owens
• Re: Good Resource (book) for RegEx by Telemachus
• Re: Good Resource (book) for RegEx by Stealth
• Re: Good Resource (book) for RegEx by asmith9983