Bibliographies are lists of books, articles or other materials. The purpose of most bibliographies is to establish the existence of an item and describe its attributes, like author/creator, publisher, publication date, availability, or format.
Guides to literature typically list prominent works within a particular subject area or genre. In addition to the descriptive information provided in bibliographies, guides to literature may also include summaries of listed works, critical commentary, or discussions of key issues within the topic.