When you paraphrase research, even if you express the ideas entirely in your own words, you must still provide a citation. Failing to do so is a form of plagiarism, unless the information is considered common knowledge.
Common knowledge refers to facts that are widely known and generally accepted, and therefore do not require a citation. However, determining what constitutes common knowledge can be challenging. To avoid accidental plagiarism, it's better to cite a source even if you are unsure. Including a thorough record of your citations demonstrates a commitment to academic integrity and careful research practices.