https://www.ghostsandgravestones.com/types-of-ghosts.php
https://www.ranker.com/list/ghost-types-haunted-house/juliet-bennett-rylah?var=8&utm_expid=16418821-388.8yjUEguUSkGHvlaagyulMg.2&utm_referrer=https%3A%2F%2Fwww.google.ca%2F
http://libertyghosthunters.webs.com/typesofghosts.htm
https://en.wikipedia.org/wiki/Poltergeist
https://en.wikipedia.org/wiki/Bogeyman
https://en.wikipedia.org/wiki/Dybbuk
https://en.wikipedia.org/wiki/Fetch_(folklore)
http://www.shadowpeople.org/
https://en.wikipedia.org/wiki/Brownie_(folklore)
http://knowledgenuts.com/2014/03/08/the-different-types-of-mythological-brownies/