1.？ APA format: APA format is a common reference format in the field of social sciences. In APA format, information such as author, publication year, document name, publication name, volume number, issue number and page number should generally be included.
2.？ MLA format: MLA format is a common reference format in the field of humanities. In MLA format, information such as author, publication year, document name, publication name, edition number, place of publication, publisher, etc. should generally be included.
3.？ Chicago format: Chicago format is a common reference format in the field of history. In Chicago format, it generally includes information such as author, publication year, document name, publication name, edition number, place of publication and publisher.
4.？ IEEE format: IEEE format is a common reference format in engineering disciplines. In the IEEE format, information such as author, publication year, document title, publication name, issue number, page number and DOI should be included.
5.？ Harvard format: Harvard format is a commonly used citation format for comprehensive references. In Harvard format, it generally includes information such as author, publication year, document name, publication name, version number, place of publication and publisher.
Different publishing houses and different disciplines have different requirements on the citation format of references, so we should choose the appropriate citation format according to the actual situation in the writing process. At the same time, the correct use of citation format of references is one of the important aspects of academic integrity, which should attract our attention.