Do you put a poem title in quotes?
you would use underlines or italics because it is a work unto itself. “I Hear America Singing” would get quotes since it’s pretty short and part of a collection. I don’t know if there’s an actual rule of thumb on this, “Song of Myself” would be tricky since it’s about 75 pages long, but I would say if it could be published on its own then it gets italics/underlines but if it’s part of a collection then you would do quotes.