There are a number of formatting styles that are used in writing. These include MLA, APA, Chicago, to list but a few. Each formatting style has got its own guidelines and rules. Again, each formatting style has got its own advantages and benefits of use.
The main reason why specific formatting styles are used is to avoid or reduce the chances of plagiarism[ CITATION The09 \p 79 \l 1033 ]. When one paraphrases or quotes the works of another person, it is only ethical for one to cite the text, author, and the particular