Okay this sounds kinda stupid, i'm working part time right now (once a week) and i'm planning to quit my job. So do i still need to give my boss a written letter about resigning and a two weeks notice? or can i just verbally tell him i wanna quit?

because if my previous jobs, i was really close to my boss, so i just verbally told them i'm quitting, and they didn't need the two weeks notice