References in undergraduate papers are usually counted as repetitions. Generally, consecutive 13 words are completely duplicated in other documents, which will be classified as plagiarism. At the same time, HowNet stipulates that the same paper can only be cited once if it is cited many times, and the cited part cannot exceed one third (including one third) of the full text.

Therefore, in undergraduate thesis writing, we should reasonably control the citation ratio to avoid the high repetition rate of the thesis due to too many citations. At the same time, the correct citation format is also very important, which can avoid the paper being marked red or judged as plagiarism because of the wrong citation format.

The specific citation ratio may vary according to the requirements of the school and the duplicate checking system. It is recommended to check the specific requirements of the school or the duplicate checking system.