References in the paper refer to documents or program policies promulgated by the state, and should be indicated by the letter N.
According to the provisions of GB3469-83 "Document Type and Document Carrier Code", it is identified by a single letter:
M - monograph (including history and chronicles in ancient books).
C1 Proceedings.
N-Newspaper article.
J-journal article.
D-1 dissertation.
R-Research Report.
S-Standard.
P-Patent.
A-Extraction literature in monographs and collections of papers.
Z - Other unspecified document types.
The electronic document type is identified by two letters:
DB - database.
CP is a computer program.
EB- Electronic Bulletin.
For electronic documents on non-paper carriers, the carrier type should also be indicated in the reference label:
DB/OL is an online database.
DB/MT is a tape database.
M/CD-disc books.
CP/DK one-disk software.
J/OL - Online Journal.
EB/OL is an online electronic announcement.
Specific arrangement method of sequential coding system
References are coded consecutively with Arabic numerals according to the order in which they appear in the text, and the serial numbers are placed in square brackets. A document that is cited repeatedly is marked with the same serial number in the text. Generally, the page number (or page range) of the document cited once is listed in the references at the end of the text.
The format is the "publishing year" of the work or the "year, volume (issue)" of the journal + ": page number (or page number range)". For documents cited multiple times, the page number or page number range of each reference (some publications also regard information that can indicate the location of cited documents as page numbers) is listed in the serial number of each reference, placed after square brackets (only the page number is listed). Numbers, do not add "p" or "page" and other surrounding words and characters; the connecting line in the middle of the page number range is a half-word line) and is superscripted.
If a page number or page number range needs to be added after the reference serial number that appears in the text, the page number or page number range should also be superscripted. Authors and editors need to carefully check the reference numbers under the sequential coding system to ensure that the number is consistent with the reference list of the document indicated in the same article. In addition, the reference page number or page range must be accurate.
Reference for the above content: Baidu Encyclopedia-References