Final answer:
The title 'Plessy v. Ferguson' should be italicized or underlined in academic writing.
Step-by-step explanation:
The title Plessy v. Ferguson should be italicized or underlined in academic writing.
According to most style guides, including the MLA (Modern Language Association) and APA (American Psychological Association), court case titles should be italicized. For example, you should write Plessy v. Ferguson.
However, if you are unable to italicize the title, you can underline it instead. The important thing is to distinguish the title from the surrounding text.
Learn more about Italicizing or underlining titles in academic writing