Citing video game dialogue?

So, flist, I want to footnote/cite video game dialogue in what's looking to be a long piece of meta. (Don't ask me why my brain insists on citing in something that's not a freaking academic paper; my brain is weird.) I can find resources on how to cite the game itself and various Let's Plays, but not how to do dialogue (other than on Wikipedia, for some reason). I usually cite in APA, but I'm not committed to it. I've tried Purdue's OWL site, but that didn't help.

Help?

ETA: There does not seem to be one (unless APA or something else has changed), so I went with Wikipedia's way of formatting.