use Net::Google::Spreadsheets;

my $service = Net::Google::Spreadsheets->new(
  username => 'pass@gmail.com',
  password => 'pass'
);

my @spreadsheets = $service->spreadsheets();

print "@spreadsheets\n";

my $array_ref = \@spreadsheets;

print "$$array_ref[0]\n";

Here is output: Net::Google::Spreadsheets::Spreadsheet=HASH(0x4c1a068) Net::Google::Spreadsheets::Spreadsheet=HASH(034cxh064)