According to GB3469-83 "File Types and File Carrier Codes", reference file types and file types are identified by a single letter:
Monograph m; Newspaper n; Journal j; Patent document p; Compilation g; Ancient books o; Technical standards;
Dissertation d; Scientific and technological report; Reference tool k; Search tool w; File b; Tape a;
Chart q; Record l; Product sample x; Video tape v; Meeting minutes; Chinese translation test;
Music score I; Movie y; Manuscript h; Microfilm u; Slide z; Miniature flat film f; Other e.
Extended data:
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Format of direct reference
I monographs, papers, papers and reports
[serial number] Principal. Title of the document [Document Type ID]. Place of publication: publisher, year of publication. Start and end page numbers.
Second, journal articles
【 Serial number 】 Principal responsible person. File title [J]. Publication name, year, volume (issue): page numbers.
Third, the literature deposited in the collection of essays
【 Serial number 】 The principal responsible person of the precipitation document. Title of precipitation document [A]. Primary owner of the original document (optional). Title of original file [C]. Place of publication: publisher, year of publication. Page number of precipitation document.
Fourth, newspaper articles
【 Serial number 】 Principal responsible person. File title [N]. Name and publication date (edition) of the newspaper.
Verb (abbreviation of verb) international and national standards
[serial number] standard number, standard name.
Patent of intransitive verbs
[serial number] patent owner. Patent name [P]. Patent country: patent number, publication date.
Seven, electronic literature
[serial number] Principal. Title of electronic document [identification and carrier type of electronic document]. The source or accessible address of the electronic document, date of publication or update/reference date (optional).
Eight, all kinds of undefined literary types
【 Serial number 】 Principal responsible person. Document title [Z]. Place of publication: publisher, year of publication.
Baidu Encyclopedia-References