- Don't Keep Me A Secret: Proven Tactics to Get Referrals and Introductions
- Get More Referrals Now!: The Four Cornerstones That Turn Business Relationships into Gold (Facts on File Science Library)
- Beyond Referrals: How to Use the Perpetual Revenue System to Convert Referrals into High-Value Clients
- The Language of Referrals
- Unlimited Referrals : Secrets That Turn Business Relationships into Gold
- W. Howard Stuart
- Carl A. Raschke
- W. R. Cates
- Mary D'Alton
- Bentley Publishers
- Joseph Heller
- Richard Abel Musgrave
- William A. Henkin
- John Allen Lemmon
- Ian Stewart
- Patrick J.D. Bouic
- Pavlik Stooshnoff
- Guy F. Riekeman
- Maury Blair
- Myrna Kostash
- Maria Tropea
- Devon Hague
- Sobonfu E. Somé
- Gregory Strong
- Ivon Owen