Name the two most popular citation styles.

MLA and APA

The Modern Language Association (MLA) style is the leading style of documentation for literary research, as well as academic papers in the humanities field. It follows a specific set of rules for formatting manuscripts, and is considered, along with the APA style, a standardized reference format in college.

The two most popular citation styles are MLA (Modern Language Association) and APA (American Psychological Association).

MLA - Reserved for writers and students preparing writing project.

APA - Reserved typically for writers and students preparing writing project in social student.