foreach my $ref ( 
   sort {$a->{LastName} cmp $b->{LastName} or $a->{FirstName} cmp $b->{FirstName} }
   @records
){
     print "<a href = \"http://sph.berkeley.edu/cgi-bin/passtestfac.cgi\?name\=$ref->{'ID'}\">", @{$ref}{qw/LastName/}, ',', ' ', @{$ref}{qw/FirstName/}, "</a>", "<br>";
}