Last Updated: 02 Jun, 2016 Views: 141
For APA, the rule of thumb is that anything that would go in italics in your reference list goes in italics when you mention it in text. So the title of a book, journal or published report (like a PDF) would go in italics. Unlike your reference list, however, you also capitalise all of the major words in the title: Closing the Gap.
If, however, it wouldn't go in italics in your reference list (like a journal article, book chapter or web page), then you put it in quotation marks (and still capitalise the major words): "Closing the Gap".