The basic principles of reference analysis and summary of papers are as follows: ① It must be a relatively new and valuable reference that the author himself has read; (2) Try to select authoritative documents published in core journals; (3) Try to quote disposable literature, not unpublished literature, and avoid quoting or quoting less materials from textbooks or professional books, because they are secondary documents with poor timeliness; ④ Select the literature published by authoritative and well-known scholars.

1. Accuracy: The references should be accurate, including the author's name, title, publication date, page number and other information. When quoting documents, we should follow the corresponding norms, such as APA and MLA.

2. Credibility: The cited documents should come from credible sources, such as academic journals and academic publishing houses. You should not quote unconfirmed sources, such as personal blogs and social media.

3. Length: The number of cited documents should be appropriately selected according to the length and theme of the paper, and should generally be controlled within 20 articles.

4. Timeliness: References should cover the latest related literature to reflect the current research progress.

5. Authoritative: First, cite authoritative literature, such as the research results of famous experts and scholars, to improve the academic level of the paper.

6. Relevance: The citation of references should be consistent with the content of the paper, so as to avoid inconsistency between the cited documents and the content of the paper.