For private practitioners, who are you networking with for referral sources?

I was curious to see what all referral sources private practitioners are getting involved with. Right now, mine are insurance companies a psychiatrist and a psychologist who routinely refer to me, and I also get the random referrals from unknown physicians, psychologists, and other therapists. I am looking to find a good solid referral source to get steady patients, so any thoughts and examples would be greatly appreciated.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Psychology [Psy.D. / Ph.D.] Source Type: forums