Keep in mind that a book will be broader than a journal article. If the specific work isn't mentioned, look for books about the author's works as a whole, the genre itself, etc.
If you search for an author, look at the record. If there's a subject that includes "criticism and interpretation," follow it. Life just got easier!
Citation and proper attribution of sources rest at the core of academic research. Musselman Library provides a Citation Guide to the major citation styles with links to helpful resources online.
An online guide to MLA citation style is also available via Purdue University's OWL website.
Use The MLA Style Center's Interactive Practice Template to help build your works-cited citation.
If you've never written an annotated bibliography before, these links will explain all.
If you are a RefWorks user, you can generate an annotated bibliography in some output styles. Ask a librarian for more detail.