In the example below, the elements of the  @kk array are already array references (i.e., scalar values). No need to dereference them to arrays and then copy them into anonymous array constructors to make them array references: just use them directly.

 
>perl -wMstrict -le
"use Data::Dumper;
 ;;
 my @kk = (
   [ qw(aa bb cc dd) ],
   [ qw(kk jj ll mm) ],
   );
 ;;
 my $i = 1;
 my $arrayref = $kk[ $i ];
 ;;
 print Dumper $arrayref;
 print @$arrayref;
"
$VAR1 = [
          'kk',
          'jj',
          'll',
          'mm'
        ];

kkjjllmm
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