There is no fixed standard requirement for the number of references for undergraduate graduation thesis. According to the annual requirements, about 30 articles are recommended. The number of references depends on the academic level and research difficulty in related fields. Even if the types of papers in the same field are different, the number of citations will be different.

For graduation thesis, the number of references is not the key, but whether the selected references precipitate authoritative knowledge and research results in this field. The function of references is to support their own research, demonstrate their own views, achievements and conclusions, and fully show the depth and breadth of their thinking.

It is very important to select appropriate and representative references. References can be obtained by consulting periodical papers, professional books, Internet databases, etc., and attention should be paid to the credibility and authority of the contents of the documents. The number of references is not the only criterion for evaluating papers.

Format of references:

Reference refers to the officially published documents cited and listed in papers or other academic publications, such as periodical papers, dissertations, monographs, conference papers, reports, etc. In order to facilitate readers' reference and verification, references must be arranged in a certain format.

The format of references varies with fields, disciplines, publications, etc. , including the following information: author (surname, first name), document name, publication name, publication subject name, publication date, publication place, etc. , should be arranged according to the citation method and carrier type of the literature, in line with academic norms and publishing practices. Common reference formats are MLA, APA, Chicago, etc.

Take APA format as an example, its general document input format is: author (surname, first name or abbreviation, separated by commas), publication year (N.D. if there is no specific year), article title, publication name, number of volumes and issues (applicable to journal articles or newspaper articles), page number or DOI.