I just graduated from my master's and will be applying for some PhDs soon. I need to have two academic references so was going to ask my undergraduate supervisor and master's supervisor.
I was wondering what is the etiquette for asking for a reference? Furthermore, there are several PhDs I wish to apply for, is there a limit of how many I should apply for? I don't want their inboxes to be inundated with requests for references for me.
Thank you