<?PHP
declare(strict_types = 1);
$source_type_set = array (
  'article' => 'Artikel',
  'inbook' => 'Artikel dalam kumpulan',
  'book' => 'Buku',
  'phdthesis' => 'Skripsi S3',
  'electronical' => 'Sumber waringan',
  'misc' => 'Lain-lain',
  'patent' => 'Patent',
  'unpublished' => 'Unpublished',
);