APA-Zitierstil (7. Ausg.)

McMakin, T., & Parks, J. (2021). Never say sell: How the world's best consulting and professional services firms expand client relationships. John Wiley & Sons, Inc.

Chicago-Zitierstil (17. Ausg.)

McMakin, Tom, und Jacob Parks. Never Say Sell: How the World's Best Consulting and Professional Services Firms Expand Client Relationships. Hoboken, New Jersey: John Wiley & Sons, Inc, 2021.

MLA-Zitierstil (9. Ausg.)

McMakin, Tom, und Jacob Parks. Never Say Sell: How the World's Best Consulting and Professional Services Firms Expand Client Relationships. John Wiley & Sons, Inc, 2021.