References in this paper refer to documents or procedural policies promulgated by the state, which should be represented by the letter S.

For example, references are national standards, and the format of Basic Rules of Chinese Pinyin Orthography is:

Gb/t16159-1996, basic rules of Chinese pinyin orthography [S].

Reference standard format refers to the publicly published document format for writing papers, which can be divided into book [m], [c] periodical press conference, newspaper article [n], [j], periodical article [d] report [r], standard [s], patent [p], [1] periodical literature and magazine [

Types of electronic documents: database [[DB]], computer [[CP]], electronic bulletin [[EB]]

Electronic literature carrier types: Internet [OL], CD [CD], magnetic tape [[MT]], magnetic disk [[DK]].

The cited references are coded with Arabic numerals in the order in which they appear in the text, and the serial numbers are placed in square brackets. If the file is referenced repeatedly, it is marked with the same serial number in the text. Generally speaking, the page number (or page number range) of a document cited once is listed in the following references.

The format is "publication year" of the work or "year, volume (issue)"+":page number (or page number range) of the periodical. For documents cited many times, list the page number or page number range of each reference in the serial number tag (some publications also regard the information that can indicate the location of the cited documents as page numbers) and put them in square brackets (only numbers are listed, without words and characters such as "P" or "page"; The line in the middle of the page number range is a half-word line) and marked with superscript.