If you're using Drupal for an academic site, you may want to use footnotes in your content.

There is a Drupal module that makes these easy. In this tutorial, I'm going to show you how add footnotes.

• Install and and enable the Footnotes module. 
• Go to Configuration > Text formats.
• Edit a text format and check the "Footnotes" box.
• Save this text format and repeat the process any other formats you use.