According to GB3469-83 "File Type and File Carrier Code", it is identified by a single letter:
M- Monographs (including works on history and chronicles in ancient books)
Essays
Newspaper articles
Journal articles
Doctoral dissertation
R- research report
S standard
patent
A—— Precipitated documents in monographs and papers.
Z—— Other unspecified literature types
Electronic document types are identified by two letters:
database
computer program
Electronic bulletin
For electronic documents with non-paper carriers, the carrier type shall be indicated in the reference mark:
A database on an online network
Database/tape database
M/CD-CD books
CP/DK disk software
J/OL- online log
EB/ol- online electronic bulletin
First, the description format of references
1
, journal author. Title [J] Title, year of publication, volume (issue): page numbers.
2、
Monograph author. Title [M]. Version (first edition not recorded). Place of publication: publisher, year of publication: page number.
3、
Author, title [c] and editor of the collection. Name of the collection, place of publication: publishing house, year of publication: start and end pages.
four
Author of the paper. Title [D] Save the location. Save unit. Year.
five
Title of patent document [P]. Country. Types of patent documents. Patent number. publication date
6、
Standard number. Standard name
7、
Newspaper writer. Title. Newspaper name. Publication date (version)
eight
The author of the report. Title [R]. Save the location. Year.
nine
Author of electronic document. Title [Identification of electronic documents and carrier types]. Source and date of the document
Second, the types of documents and their identification
1, according to GB3469
Provisions, all kinds of commonly used vouchers are identified as follows:
(1) Journal [j]
(2) Monograph [m]
(3) Essay [c]
④ Dissertation [D]
⑤ patent [p]
⑥ standard
All landowners newspaper
⑧ Technical report [r]