Hello, If I refer to occupational therapy (OT) and abbreviated as such?

Hello, If I refer to occupational therapy (OT) and abbreviated as such, and then I read later in the document from there as OT, I understand that's fine. However, what if I want to use an occupational therapist and thereby shorten. OT is OT. So What should I do? Also, in my article, I use an ad school curricula and in my newspaper. Ex program classes include food and nutrition rehabilitation, etc. I have to do something special for that? Italic, etc. Or I can list? For the head that are running on each page, APA is required. But what really put the words on each page leading the race, followed by the title, or just the title? No sections of a document page 5 of the replacement must have items? If I get something from the American Association of speech and language, and there is no author given how I can create a list in APA format reference page and in the event text?

You should refer to "OT" complete.