How to find the source and author of an article on the Internet?

Generally speaking, it's hard to find. Some authors will indicate the source of the article if they are aware of copyright, while others will not. If you have time, I'll teach you a stupid method. You enter the author of the article you are looking for in the search engine, and then see their update time. The earliest is the author. This method takes a lot of time, but it has some effects. (If the original author has been deleted, it will not be found out. This is also a weakness. )