When creating a scholarly paper, it is important to reference from where you drew your facts, ideas, and inspirations. Properly using a reference requires knowledge about the citation style you need to use, so even though these tools do most of the heavy lifting - you still need to know a little about your style. For example, where, in your sentence, should the citation appear - is it at the end or somewhere in the middle of a sentence? Examples can help--check out the Purdue Owl.
3 options for citing: