APA Style's rules about running heads
The best source for information about APA Style is APA itself.
· The APA Style blog includes a post discussing running heads, which says: The running head (along with the page numbers) appears in the header of every page (the header by nature is situated within the top margin of your paper; all the margins themselves should be set to 1 inch). Type it in all capital letters, make sure it is no longer than 50 characters (including spaces), and left justify it. Then add your page numbers, right justified.
· On the first page only, the running head is also preceded by the words Running head and a colon. On all other pages, just the running head itself and the page number appear, without the words Running head:
· APA also has an example showing how the running head should appear on the title page and subsequent pages: http://supp.apa.org/style/PM6E-Corrected-Sample-Papers.pdf
Instructions for Microsoft 2016:
See the Purdue OWL for an APA Sample Paper