"When you paraphrase from a source, you restate the source's ideas in your own words. Whereas a summary provides your readers with a condensed overview of a source (or part of a source), a paraphrase of a source offers your readers the same level of detail provided in the original source. Therefore, while a summary will be shorter than the original source material, a paraphrase will generally be about the same length as the original source material.
When you use any part of a source in your paper—as background information, as evidence, as counter argument to which you plan to respond, or in any other form—you will always need to decide whether to quote directly from the source or to paraphrase it. Unless you have a good reason to quote directly from the source, you should paraphrase the source."