A bibliography is a list of sources (books, journals, Web sites, periodicals, etc.) used for researching a topic

An annotated bibliography means and a short paragraph about the source added beneath the citation.
What the paragraph might include:

Why are annotated bibliographies important?
Annotated bibliographies are important because they can help you learn about the different sources and the variety of perspectives related to your topic. Understanding different perspectives helps you develop your own perspective about the topic. Annotated bibliographies can also be used as a personal pre-writing exercise to help you piece together the different elements of your research.
