John Jantsch is a marketing consultant who specializes in small businesses. He's written several successful books, including The Referral Engine and The Commitment Engine.
Duct Tape Marketing outlines the most essential facts about effective marketing for your small business. It explains what techniques really work and how you can build a marketing campaign that will not only bring in customers but keep them and have them spread the word to their friends, too.
The Referral Engine (2010) is a practical guide to developing an in-depth referral-based marketing strategy for your business. These blinks explain why referrals are so powerful before taking you through a step-by-step process to build the referral machine that your company wants and needs.