You should italicize the Mayflower Compact when referencing it in text. Italics are typically used for titles of documents, books, and other standalone works. Underlining is less common in modern writing, especially in digital formats, where italics are preferred.
ITALICIZE
You underline it
Italicize or underline the title.
Underline. Unless you're typing, in which case you italicize it.
No.
No, you underline it.
YES!
If you are writing by hand, then yes you underline it, but if you are typing, you need to italicize it.
Underline or italicize -saf
New rules say to italicize
no, you italicize it.
No just underline