Hi, everybody. I'm having some trouble quieting down the students. This inner city school has some rowdy children. I speak up, and they're still talking. I give signals, and they continue talking. I wait for them to quiet down so I can speak, and they keep talking. It's a very small school, so everyone knows everyone. They're all friendly with each other. I usually have to ask them about 4 times to sit down before they actually do. Sometimes, I feel like I'm talking to myself. Do you have any recommendations for books I can read, or some tips on how to quiet down a very noisy and talkative classroom?