APA (From APA Style Blog)
To cite a quality standard or guideline in APA Style, provide the author, date, title, and source of the work. After the title of the work, provide any number or identifier for the standard in parentheses without italics. Here is a template for citing a standard:
Reference list: Organization That Made the Standard. (Year). Title of the standard (Standard No.1234). Retrieved from http://xxxxx
In text: (Organization That Made the Standard, year).