There are a few different things that you might want to consider adding to your bibliography, depending on what type of paper you are writing. If you are writing a research paper, you will want to make sure to include any primary sources that you used in your paper. This could include books, articles, interviews, or other firsthand accounts. You will also want to include any secondary sources that you used, which are usually scholarly articles or books that analyze and interpret primary sources. Finally, you will want to list any other materials that you used in your paper, such as data sets or surveys.
If you are writing a literature review, your bibliography will mostly consist of secondary sources. In addition to scholarly articles and books about your topic, you might also want to include reviews of the works that you are discussing. These can be found in newspapers, magazines, or online. You might also want to look for criticism of the works that you are discussing in order to get a well-rounded view of the scholarship on your topic.
An annotated bibliography is similar to a regular bibliography, but each entry includes a brief summary and evaluation of the source. This can be helpful if you are writing a paper and want to quickly evaluate whether a particular source will be useful for your purposes. When writing an annotated bibliography, it is important to not just summarize the source but also offer some analysis and evaluation of its usefulness.