A good source would be real estate publications and websites. You can check out property listings and other real estate-related news that can lead you to the most noteworthy professionals in the industry. If you wish to get a good idea of how these realtors work, you can go to the open houses advertised on these publications.
Asking for referrals from people in the community is also a good idea. For instance, you can go to a local supermarket or retail store and start a casual conversation with a few residents. If they worked with a remarkable realtor in the past, they certainly won't hesitate to recommend them to you.
However, if there are people who are not comfortable with providing this information, simply back off and avoid being pushy. You certainly don't want to be in hot water with these guys. Instead, focus on finding a realtor you can work with and aim to get settled in as soon as possible.