1. Literature source: References must be credible and authoritative publications, including academic journals, conference proceedings, monographs and dissertations.

2. Format specification: References need to be written in a prescribed format, generally including the author, title, publication name, publication year, page number and other information. Different disciplines may have different requirements for reference formats, which need to be adjusted according to specific conditions.

3. Accuracy and completeness: References need to accurately quote the information in the original documents, and at the same time, they need to list all necessary information completely to avoid affecting readers' search and understanding due to lack of information.

4. Number of references: The number of references should meet academic requirements, generally more than 20, depending on the research field, research depth and research object.

5. Citation method: When citing references, pay attention to the format and method, generally including direct citation, indirect citation and secondary citation, which need to be accurate and clear.

6. Timeliness: References need to be timely, especially in areas that have developed rapidly in recent years, and recent literatures need to be cited.

7. Retrievability: References need to be easy for readers to find and obtain, and generally need to include information such as publication name, publishing house and page number, so that readers can find and read according to references.

8. Internationalization: For international academic papers, authoritative international documents need to be cited to avoid affecting academic quality and influence due to geographical restrictions.

9. Typesetting format: The references of the paper need to be typeset according to the prescribed format, which generally includes the author's name, document name, publication name, publication year, page number and other information, and needs to be typeset according to a certain order and standard.

In a word, references are an indispensable part of academic papers and need to be taken seriously. In the process of writing, it is necessary to record the cited literature information in time and arrange and typeset it according to the prescribed format. At the same time, we need to pay attention to the requirements of accuracy, completeness, timeliness, retrievability and internationalization of references.