Writing Sample Formatting/Writing Style Question

[ClassicsCandidate]

Hello, all! I'm still in the process of editing my writing sample, but the issue I'm trying to figure out is the writing style. The most recent paper I have is from an interdisciplinary foundations graduate course, but the professor required us to use APA. Should I keep it that way if I'm applying to a Classical Studies MA program? I've been trying to figure out if I should make it Chicago before putting it in with my application; the biggest issue I'm concerned about is that the writing sample is what the university uses to judge whether to offer the student funding or not. So, I want to make sure the formatting is done well in addition to the paper being written well. Since it also deals with disabilities studies in my paper, I suppose the APA might be okay, but I'm nervous about it. Any suggestions?