The quotation format is direct quotation, which refers to word-for-word quotation. Direct quotation can prove the authority of a point of view or text, preserve the original text of the quoted content and emphasize the accuracy of the quoted content. When making a direct quotation, the quotation should be as short as possible. If the quotation is too long, that is, more than half a page, it should be placed in the appendix and explained in the text. Direct quotation refers to the original words, which must be quoted in quotation marks, and besides indicating the author and publication year, the specific page number should also be indicated.

Basic rule

The format of the basic rules of Chinese pinyin orthography is [13] GB/t16159-1996, and the basic rules of Chinese pinyin orthography [S]. The standard format of reference refers to the format of writing papers citing published documents.

According to the types, it can be divided into monographs [M], conference proceedings [C], newspaper articles [N], journal articles [J], dissertations [D], reports [R], standards [S], patents [P], precipitated documents [A] and magazines [G].

Electronic file types: database [DB], computer [CP], electronic bulletin [EB] Electronic file carrier types: Internet [OL], CD [CD], magnetic tape [MT], and disk [DK].