How do I in text citation from American Psychological Association. Ethical principles of psychologists and code of conduct . Retrieved from…

How do I in text citation from American Psychological Association. Ethical principles of psychologists and code of conduct. Retrieved from http://www.apa.org/ethics/code/index.aspx

I have to cite from this page just dont remember how to do it exactly
Do I write (APA,2019). (APA,2018). So confused or do I include the page #
Been a while since I was in school