The book description items in the reference are in order: author, book title, article title, publisher (please indicate the city before), journal title, publication year, publication year, and starting and ending page numbers. Among them, document types and identification codes: general books [M], journals [J], newspapers [N], conference proceedings [C], dissertations [D], reports [R], compilations [G], standards [S], Patent [P], database [DB], computer program [CP], electronic bulletin [EB], magnetic tape [MT], magnetic disk [DK], optical disk [CD], online network [OL]. The format requirements for references in foreign original texts are the same. Examples are as follows: [1] Liu Guojun, Chen Shaoye. Library Catalog [M]. Beijing: Higher Education Press, 1957:15-17. [2] He Lingxiu. Reading Gu Cheng's "History of the Southern Ming Dynasty" [J]. Chinese History Research, 1998 (3): 167-173. [3] Xie Xide. New ideas for creative learning [N]. People's Daily, 1998-12-25 (10). [4] Xin Ximeng. International Symposium on Information Technology and Information Services Proceedings: Collection A [C]. Beijing: China Social Sciences Press, 1994. [5] Zhang Zhusheng. Invariant sets of differential semidynamic systems [D]. Beijing: Institute of Mathematics, Department of Mathematics, Peking University, 1983. [6 ] Wei Xin. Research report on the effect of expanding the scale of higher education on short-term economic growth [R]. Beijing: Institute of Higher Education Sciences, Peking University, 1999: 13. [7] Lin Huifang. Overview of the American Publishing Industry [M]//Lu Benrui .Overview of World Publishing. Beijing: China Book Publishing House, 1991: 1-23.