* Modern Style Guides: Most modern style guides, like the Chicago Manual of Style and MLA, recommend italicizing titles of books, including memoirs.
* Clarity and Consistency: Underlining is an older style that can be confusing, as it's also used for emphasizing words within a text. Italics are more widely accepted and provide a clear visual distinction for titles.
Example:
Instead of: _"Angela's Ashes" is a moving memoir._
You would write: *"Angela's Ashes"* is a moving memoir.