1, APA format:
Journal articles: author, A.A. (year), title, journal name, volume number (issue number) and page number.
Citation format: author (year) or (author, year).
For example: Smith, J. (20 10). The impact of climate change. Science, 327 (5970), 1456- 1462.
Book: author, A.A. (year), title, publishing house.
Citation format: author (year) or (author, year).
For example: Johnson, B. (20 18). Financial mathematics. New york, NY: Cambridge University Press.
2.MLA format
Journal article: author, "article title", journal name, volume number, issue number, year and page number.
Citation format: (author page number).
For example, M. Franklin's The Art of Forgiveness Psychology Today, Volume 23, No.5, 20 18, pp. 50-56.
Books: author, title, place of publication: publishing house, year of publication.
Citation format: (author page number).
For example: Garcia Marquez, Gabriel. A hundred years' solution. New york, NY: Harper Perennial, 2006.
3. Chicago format
Journal article: the author's last name and first name. The title of the article. Journal name, volume number and issue number (year): start page to end page.
Citation format: (the author's surname is the starting page number).
For example: Smith, John. "The impact of climate change." Science 327, No.5970 (2010):1456-1462. (Smith 1456).
Books: the author's last name and first name. Book title. Place of publication: publishing house, year of publication.
Citation format: (the author's surname is the starting page number).
For example: Johnson, Bob. Financial mathematics. New york, NY: Cambridge University Press, 20 18. (Johnson is 27 years old)
The purpose of citing references
1. Prove the argument: citing references can strengthen the credibility and persuasiveness of the argument, and prove your point by citing reliable documents, thus improving the reader's recognition of the argument.
2. Follow academic norms: citation of references is an indispensable part of academic works, and follow academic norms and intellectual property laws to protect the intellectual property rights and academic achievements of others.
3. Support research: Citing references can provide more extensive reference and support for research and help researchers better understand and analyze problems in related fields.
4. It is convenient for readers to trace information: citing references can help readers trace relevant materials and information, provide more comprehensive references, and facilitate readers to understand and understand the source and reliability of the paper.