In addition, you can check if there are any reptile/herp societies in any large city areas near you, there may be local breeders you can get in contact with that way. Also, in addition to web sources Deborah mentioned, when you do start to find sellers you might want to buy from, ask them for references (and follow up with the references).
I also prefer to support small scale breeders as much as possible.
Good luck in your search!
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