General APA Guidelines
Your essay should be typed and double-spaced on standard-sized paper (8.5" x 11"), with 1" margins on all sides. Include a page header (also known as the “running head”) at the top of every page. For a professional paper, this includes your paper title and the page number. For a student paper, this only includes the page number. To create a page header/running head, insert page numbers flush right. Then type "TITLE OF YOUR PAPER" in the header flush left using all capital letters. The running head is a shortened version of your paper's title and cannot exceed 50 characters including spacing and punctuation.
The 7th edition of the APA Publication Manual requires that the chosen font be accessible (i.e., legible) to all readers and that it be used consistently throughout the paper. It acknowledges that many font choices are legitimate, and it advises writers to check with their publishers, instructors, or institutions for guidance in cases of uncertainty.
While the APA Manual does not specify a single font or set of fonts for professional writing, it does recommend a few fonts that are widely available. These include sans serif fonts such as 11-point Calibri, 11-point Arial, and 10-point Lucida Sans Unicode as well as serif fonts such as 12-point Times New Roman, 11-point Georgia, 10-point Computer Modern.