You had previously cited the article with multiple articles, so it should have been et al. if it is the same article--which it appears to be. I thought the content was fine--I did not put it through a plagiarism checker--I have never used one, didn't even know they were available, but I saw no evidence of that. You quoted everything necessary and cited everything else. The format is APA. Hope this helps.

Regards,

Nyanidoc