Both Chinese and English documents must be cited in the paper writing before they can be included in the reference, and they can't be done casually.

References are references in the process of writing articles or works. However, according to GB/T77 14-20 15, the reference after the text refers to the relevant literature information resources cited for writing or editing papers and works. According to the requirements of "China Academic Journals (CD-ROM Edition) Retrieval and Evaluation Data Standard (Trial)" and "China Social Science Journals Arrangement Standard (Revised Edition)", many publications distinguish between references and annotations, and define annotations as "words that further explain or supplement a certain content in the text", which are listed at the end of the article, separated from references or placed in the footer.