I'm now preparing for the application process. Please tell me who are the best people to seek references from. I work in a busy surg/trauma ICU. Lots of residents, and attendings. There is a nurse manager, and staff too. Previous/current instructors? I need three, and I want to be careful.

Also, as far as shadowing a CRNA, what would be considered an "adequate" amount of time to spend with someone?

Thanks for any input!