Forge alliances

Join your community’s professional and business associations.
Nothing – absolutely nothing – beats face-to-face contact.
Distribute personal marketing materials.
If you’ve got a personal brochure, a CD-ROM, a DVD or any printed matter that promotes your personal brand, get it into the hands of the CPAs, attorneys and business advisers around you.
Offer incentives.
Your offer will vary depending on a) the climate of your circle of contacts and b) the state in which you practice. You may be among a circle of contacts to which you can offer professional incentives, financial incentives, or “fun” incentives. Some states frown on this; some business communities do as well. But by all means, test the waters.
Follow up.
Keep yourself in these contacts’ minds. The prime factor for referrals won’t be the incentives you offer; it will be the quality of your personal brand, and that brand has to stick in your referral source’s mind.