What information does not need to be cited in a research paper?

* Common knowledge. This refers to information that is widely known and easily accessible, such as the fact that the earth revolves around the sun.

* Facts that can be easily verified. This includes information that can be found in reliable sources, such as encyclopedias, dictionaries, or textbooks.

* Personal observations or experiences. This refers to information that you have personally observed or experienced, such as your own research findings or personal anecdotes.

* Information that is already cited in the source you are using. If you are using a source that has already cited the information you are using, you do not need to cite it again.