Why is it important to use a variety of sources?
When you consult different kinds of sources, you discover the whole conversation about a topic. With news and magazine articles, for example, you get a journalist's perspective including the facts of who, what, where, when, why and how. But a book about a topic might be written by an expert and includes some history and analysis of a topic.
Using good sources also lends credibility to your paper.
Research typically involves using a variety of sources. Your sources might include a combination of the following: