According to GB3469-83 "File Type and File Carrier Code", it is identified by a single letter:
M-Monographs (including historical records in ancient books)?
C-essays？
Journal articles
N- newspaper article?
Journal articles?
D- thesis?
R- research report?
S standard?
P patent?
A- precipitation literature in monographs and papers?
Z-other unspecified literary types?
Electronic document types are identified by two letters:
D B- database?
CP- computer program?
Electronic bulletin?
For non-paper carrier electronic documents, the carrier type should be indicated in the reference mark:?
A database on an online network?
Db/mt- tape database?
M/CD-CD books?
CP/DK- disk software?
J/ol- online log?
Online electronic bulletin?
: 1. What is the description format of the reference?
1, author of the journal. Title [J] Title, year of publication, volume (issue): page number?
2. Monograph author. Title [m]. Version (first edition not recorded). Place of publication: publishing house, year of publication: page number?
3. Author, Title [c], Editor, Collection Name, Place of Publication: Press, Year of Publication: Start Page?
4. Author of the paper. Title [D] Save the location. Save unit. Year?
5. Title of the patent document [P]. Country. Types of patent documents. Patent number. Date of publication?
6. Standard number. Standard name?
7. newspaper author. Title. Newspaper name. Publication date (version)?
8. Author of the report. Title [R]. Save the location and year.
9. Author of electronic document. Title [Identification of electronic documents and carrier types]. What is the source and date of the document?
Second, the types of documents and their identification?
1. According to GB3469, various commonly used documents are identified as follows:?
(1) Journal [j]?
(2) Monograph [m]
(3) essay [c]?
(4) Dissertation [D]?
⑤ patent [p]?
6 standard?
All landowners newspaper
Today's technical report [R]?
2. The type of electronic document carrier is identified by two letters, as follows:
① magnetic tape [[〔MT〕]?
② Disk surface [[〔DK〕]]?
(3) 〔CD〕？
④ Online network [[〔OL〕]