There are a few key ways that the APA style differs from other writing styles. First, APA uses a "running head" at the top of each page. This is a short version of your paper's title that should be no more than 50 characters long. Second, APA papers always use 12-point Times New Roman font and are double-spaced. Finally, each page (including the title page) should have a page number in the top right corner.