Does anyone know how to get rid of silverfish?

I have never seen a bug in this house before until a few hours ago. I saw a silverfish in my bed, then a HUGE beetle in the bathroom sink. I changed all the sheets on my bed. The dirty sheets are in the wash & the clean sheets are on my bed. I found 3 more silverfish crawling on the comforter! I just put that in the washer but have no idea where these things are coming from all of a sudden & how can I get rid of them ASAP?! I have the creepie crawlies now & can't sleep!