How do we properly format the titles of media and documents when we write about them in our assignments?
When you are referring to any book (including a book of poems, stories, articles, etc.), as well as an album or newspaper, the title should be underlined or italicized. If you are referring to an individual poem, story, or article, the title should be in quotation marks. In other words, we distinguish between a major published document or work (e.g. book, album, magazine, newspaper, play) and the parts that make up that major document (e.g. chapter, poem, song, essay, short story, scene). This distinction is especially helpful when you are creating a bibliographical entry (also here) or a footnote that requires you to name an article and the book or magazine where it's found.
(If you are typing, you have the option of choosing whether to underline or italicize major works. Just make sure to use your choice consistently.)
In other words, the larger unit is underlined or italicized, while the smaller, constituent unit is enclosed in "quotation marks". Here are some colour-coded examples within a bibliography, but this distinction also applies to individual titles inside your paragraphs and essays.
aFox, Charles James. "Liberty Is Order, Liberty Is Strength". What Is a Man?
aCave, Andrew. "Microsoft and Sun Settle Java Battle". Daily Telegraph [London]
aBelava, Antoaneta. "China to Formalize One-Child Policy". Asia Times Online.
Here are some more examples: