Summarizing is condensing a large amount of information from a source/author(s) using YOUR OWN WORDS.
You MUST cite the original source, both in-text and in your references/works cited.
Summarize when you need to extract the main idea(s) of a source.
Summarize when you need to provide background or an overview of a topic.
Summarizing is often used in annotated bibliographies, when you must provide a paragraph or two to explain the main findings/arguments of a source/author(s).
Summarizing is also often used for literature reviews, when you must explain the main findings of the seminal works in a narrow field.
How to Summarize