The following document will show you how to get access to the fields:
https://api.drupal.org/api/drupal/modules!node!node.tpl.php/7
All this information is stored in the $node array. You can print the array to see it with print_r wrapped in html pre tags.
Example for a field named authors:
<?php $node->field_authors[0]['value'] ?>
Or
<?php $node->field_authors[0]['safe'] ?>
for a sanitized version.
Instead of printing the array with print_r you can use the Devel module