(1) Types of references:
There are many types of references, mainly monographs [M], proceedings [C], newspaper articles [N], and journal articles [ J], thesis [D], report [R], standard [S], patent [P], extracted documents from thesis collection [A], etc., the most common of which are journal articles.
(2)The number of cited references.
Some magazines may impose certain restrictions on the number of references. Generally, the number of references for academic articles is 20-40. Review articles generally have more references than research articles. Except for the review, if the references of other articles exceed 40, it means that compared to the results of your research, the discussion and preface may contain too much content and need to be deleted.
(3) Citation format in the text of the reference.
The citation format of references in the text is subject to the requirements of different magazines, but it is nothing more than numerical numbers and names.
Numerical numbering is relatively simple, just number the documents that appear one by one from front to back. In case a reference needs to be added or deleted in the middle, all subsequent numbers will change. If we enter references manually, it will be very troublesome. At this time, you need to use endnote software or other related reference software to help.
Another type of in-text citation is the citation of a person's name. Generally speaking, if the document belongs to one author, just write the author's name directly; if there are two authors, connect the two authors with and; if there are three or more authors, enter the first Add et al. after the author's name. Since et al. means "etc." in Latin, it needs to be italicized, and it is an abbreviation, so a period must be added after it.