When selecting your sources, consider the following:
Is it too general? A one-paragraph encyclopedia entry might not give enough information for a college-level project. You'll need to look for more.
Is it too specific? Maybe you're looking for some background information on the history of music in one country. A book focusing exclusively on one composer from the 1920s in that country will be too specific to your needs.
Is it relevant? After going down a research rabbit-hole, sometimes you lose track of what information you really need. Double-check to make sure your source answers the questions you need it to answer.
Is it credible? See below for more information on evaluating source credibility.
Think critically about web sites and print resources.
Authority: Who is the author or creator? What are their credentials for this topic?
Content: What is the author's bias? Who was the information written for?
Currency: What is the publication date? When was the website last updated? Does this matter for your topic?
Validity: Is the information accurate or valid? Are there references to other works that support the information?