A.——Monograph, Proceedings, Dissertation, Report
Format: [Serial Number] Main Responsible Person. Document Title [Document Type Identification]. Place of Publication: Publisher, Year of publication. Starting and ending page numbers (optional)
For example: Liu Guojun, Chen Shaoye. Library catalog [M]. Beijing: Higher Education Press, 1957.15-18.
One book The references of books are often marked with square brackets and letters, such as [M]. When writing an article, the author must mark the references. According to the provisions of GB3469-83 "Document Type and Document Carrier Code", they are marked with a single letter.
Annotations for papers
M——Monographs (including history and chronicles in ancient books)
C——Collection of papers
N——Newspaper article
J——Journal article
D——Dissertation
R——Research report
S—— —Standards
P—Patents
A—Extracted documents in monographs and collections of papers
Z—Other unspecified document types
Electronic document types are identified by two letters:
DB - database
CP - computer program
EB - electronic bulletin