Help choosing best reference for application

[CloCloAA, CNA]

I need to provide two references for my application. I can use my Physiology professor for one.

I've been working as a CNA (float pool) at a hospital for 8 months, but because it's a huge hospital and I'm a floater, there's not really one supervisor or coworker that I know very well to ask for a reference. 

So, for my second reference, should I use my boss at a sandwich shop that knows me well and I've been working there for four years (I'm a supervisor, so I have a leadership role). Or is it better to use someone who doesn't know me well at the hospital -- my hiring manager at the hospital. She hired me but doesn't really know me after that. 

[rougewitch]

I don't see why you should use someone you wouldn't know as your reference, even if they work at a hospital and would potentially be advantageous to your application. They wouldn't able to describe you well because they don't really know you which you said.

[EricJRN, MSN, RN]

I agree with the previous poster. It sounds like your sandwich shop boss would be able to write a more personal and specific letter that would show qualities like leadership that would probably look good. 

Good luck to you!