Indiana University: University Information Technology Services (2008-05-05). "What is a troll?". Indiana University Knowledge Base. The Trustees of Indiana University. Archived from the original on 2014-05-23. Retrieved 2009-03-24.
Indiana University: University Information Technology Services (2008-05-05). "What is a troll?". Indiana University Knowledge Base. The Trustees of Indiana University. Archived from the original on 2014-05-23. Retrieved 2009-03-24.