According to Library of Congress web policy, all links to non-dot.gov (.gov) or -dot.mil (.mil) websites must include the standard "external link icon." (see: Web Presence Procedures, Resources and Guidance website).
<i aria-hidden="true" class="fa fa-external-link-alt"></i><span class="screen-readers-only">External</span>
To add the external link code using the ADD Link tool, copy and paste the code string in the “Link Name” box directly following the link name text. Always add one space prior to pasting in the the code string as illustrated in the screenshot below:
To add the external link code to narrative text in a LibGuide, you should first create the link in your Rich Text/HTML box, using the "Add Link" button as illustrated below:
Note: Make sure to mark any links created in your narrative text to open in a new window. Select the Target tab and select New Window (_blank) from the drop-down menu.
After you have added the link, select the “Source” button in the Rich Text/HTML box in order to view the HTML source code. Locate the coding for your link (coded using the <a> ... </a> anchor tag). Place your cursor right before the closing </a> tag and press the space bar to add a space. Paste the code string one space after the text and directly prior to the closing </a> tag as illustrated in the screenshot below: