A chronological bibliography is a list of sources used for research purposes, organized according to their publication date. However, there are other terms that can be used to describe a similarly structured bibliography. A timeline bibliography is a list of sources sorted by date of event rather than publication date. A historical bibliography is a list of sources that specifically pertains to historical documents or events. An annotated bibliography includes a brief summary of each source along with publication information, which can also be organized chronologically or otherwise. Overall, the term chronological bibliography is just one way to describe the organizational structure of a list of sources.