...particular property? the property is a foreclosure and the agents that are listed are no longer associated with the property and there is no sign saying who is. And i am interested in buying it.
The property should have a sign on it or if you found it on-line the agents name should be on it.
If you are just looking for an agent to represent you, ask other people who they use.
What is it that you need. Are you looking for the agent who is representing a house you like or do you want an agent to help you with a house you have already found?
there are a few good resources to find anyone anywhere, although are you looking for the homeowner or an agent? Above gave good advice for finding an agent but to find a homeowner look at public records in your city or county, most are online now.