Citations from the title of an article I want to cite the words “cascade of disparities” which actually comes from the title of an article.  Under the APA style, do I need to include a page number since the words are in the actual title (and used throughout the article)?
A short, repeatedly used piece of terminology like this does not need to be localized to a particular point.  Attempting to pin down a particular page number doesn't make sense, because what you're really referencing is the concept as developed in the article, rather than some particular sentence.

I would thus say that you should treat it as a scientific citation rather than a quotation: cite the article as a whole as the context, and do not attempt to give a page number like you would for a quote.