Yes, I can understand why you would be sick of it. Settling on one type of citation (perhaps taking to good points from both?) would be ideal.
I have a Harbrace Handbook and it has a few APA citations but mostly MLA citations. I am writing a paper on Linear Transformations for the Physics Post and I wanted to cite a lecture (but it [the Harbrace] only offers lectures in MLA, not APA). I had the hardest time trying to find it for APA standards. Then, when I needed to cite a web site for my English paper, the Harbrace offers the citation in APA, but not MLA. It is very vexing.