Cite your source. The format will differ depending on what style your instructor asks you to use. For example, if they require Modern Language Association, or MLA style, your citation for a journal article will look like this: Author Last Name, First Name. "Title of Article." Magazine Name (Year Published): page numbers.
Write a brief statement regarding the work, and how it relates to the field of study.
Summarize the work in a brief, concise manner. The keyword is concise. You do not have to touch on every single aspect of the work, just the major points, especially those that apply to your research.
Add an analysis of the work. Ask yourself the following: How does this relate to my research? What makes this a valid source? How does it compare to other works?