Should I use the title of a poem when I meet the title of a book and a song? For example, Nanhai is famous for its songs. Talking about the South China Sea is a song. What symbols are used in poetry?

Personally, I think the ancients didn't have these punctuation marks, but after checking the usage of the title, it is necessary to use it if it is the title, but you have to see whether this sentence should emphasize the content of the title or the content of the song, or emphasize its name, emphasize the content instead of the name. It is necessary to analyze specific problems.