Hey there!
You've probably heard this before. When doing academic research for any project, report, or worksheet, you should never use wiki sites. The main reason for this is because access to edit any article is open to the public with an account.
This means that anybody, anywhere, can edit a wikipedia article if they wanted to. This greatly decreases the validity of any information on there because anybody can change it. When doing research, going on reputable websites that have verified and cited information, as well as just plain textbooks, work as well- anything that's not available to anybody that wants to change it.
Hope this helps!