3.5mm microphone for nikon camera?

I want I microphone that I can clip to interviewees when I use my nikon d5100 to record them. My camera's audio input is 3.5mm. What would be a good one that I can buy.

I don't want those really big ones, just a small one that I can clip to their shirt or something to reduce the wind sound.

Lav mikes are available all over the web but I recommend B&H or Amazon. Sony has a good line of
lavaliere microphones. But, know they're usually not cheap - perhaps $100 or more.