I am careful about placing attribution to quotes in assignments. Occasionally, in assignments, I must use quote marks for purposes other than quoting, but my instructor misinterprets this as a "quote missing a citation".
In the Wikipedia article on Quotation Marks, one can find a list of examples of other uses of quotation marks. Suppose I need to use quotation marks to "signal unusual usage" ("Quotation Marks", 2014) or show some "distinction" in "usage" ("Quotation Marks", 2014) or even scare quotes. Is there any way in which I can indicate this, in APA style?