1. Contact the author or publisher: You can try to contact the editorial department or author of the journal and ask the specific serial number of the cited article.

2. Search the electronic database: You can search articles in the electronic database, such as Google Academic, China Knowledge Network (CNKI), Wanfang, etc. These databases usually display the specific serial numbers of articles.

3. Find the library collection: If you are in a school or public library, you can try to find the paper or electronic collection of periodicals and find the specific issue number of articles through the catalogue page of periodicals.

4. Refer to other documents: If you see the contents of articles cited by other documents, you can determine the serial number of articles by comparing other articles in the same journal.

If all the above methods fail, you can indicate the specific publication information of the article in the bibliography, including the year, month, day and literature source, so that readers can find it by themselves.