Since the internet comprises numerous sites, there are a lot of possible sources to use. However, you should not cite just anything you find in a scholarly paper because most online content is not thoroughly researched and/or is written from a biased perspective. For instance, according to the linked handout, every Web source should be evaluated based on
Currency ("The timeliness of the information"),
Relevance ("The importance of the information for your needs"),
Authority ("The source of the information"),
Accuracy ("The reliability, truthfulness, and correctness of the information"), and
Purpose ("The reason the information exists").
For more information on those rigorous standards to help you evaluate an internet source for a scholarly essay, please see the following linked handout: