In a paper, the difference between citing books and journal articles is that the references of books are usually at the end of the paper, and the difference between citing books and journal articles is that the references of books are usually presented at the end of books or chapters in the form of lists to mark and explain the references cited in books or chapters. The references of journal articles are presented at the end of the article in the form of a list, which is used to mark and explain the references cited in the article.