Citation, Documentation of Sources

Q. Titles of works should be italicized, but on social media sites (e.g., Facebook, Instagram) text cannot be formatted. In social posts, is it best to leave titles of works Roman? Or do you recommend another way to designate titles of works using only plain text?

A. You can use “quotation marks” or ALL CAPS, or write _Title_ or *Title*.

[This answer relies on the 17th edition of CMOS (2017) unless otherwise noted.]