bailey reads wikis at the beginning of his research project to get his bearings on the topic. he switches to peer-reviewed journals and professional publications for his formal sources. why does bailey not use wikis as formal sources?

peer-review

Explanation:

Anyone can edit wikis; while its true that they are well reviewed sometimes, there are times where vandalism can go unnoticed. Furthermore, professional publications are peer-reviewed to a much more rigorous standard. Therefore, Bailey doesn't use wikis as formal sources.

answer ingress;