Depending on the focus of the class, your professor may want you to find particular types of sources for your research assignments. This is especially important in the world of articles, which come in three main types: Popular, Trade and Scholarly. So what should you look for it your professor says you must or should be using one of these types of articles?
The ASU Library has an online tutorial you can view that will define each type of articles. We also have a handout your can view and refer to.
But in Film Studies Trade Journals are especially valuable if you are studying the industry and film production. Trade Journals are regularly published titles that reports on the news of the day and recent developments in a particular industry. The articles and news items are written by reporters who follow the industry closely.