What is a good book on CGI and Perl?

Larry Wall, the creator of Perl, has called Perl 6 "the community's rewrite of Perl", because he based the changes largely on 361 "requests for change" submitted by the Perl community in 2000. This has prompted criticisms describing the Perl 6 design process as design by committee. Wall outlined these changes in a series of essays, called Apocalypses, which are numbered to correspond to chapters in Programming Perl ("The Camel Book"). These are now considered historical, and the current, unfinalized, specification of Perl 6 is encapsulated in design documents called "Synopses", which are numbered to correspond to Apocalypses.