The centered title should always be called in italics and never use terms like “References,” “Bibliography” or “Sources.” The entries should be in alphabetical order based on the author’s last name.
An MLA in-text citation should look as follows: Although MLA does not require a cover page, professors often want their students to include one because it makes the paper look more organized and professional.
Professors will generally provide guidelines for how they would prefer the cover page to look.
But since there was no way to print italics, names of publications were underlined.
As a rule, if you are still using a typewriter or are writing the bibliography by hand (although professors do not usually allow this) you would still want to underline.