APA-Zitierstil (7. Ausg.)

Leboff, G. (2007). Sales therapy ?: Effective selling for the small business owner. John Wiley & Sons.

Chicago-Zitierstil (17. Ausg.)

Leboff, Grant. Sales Therapy ?: Effective Selling for the Small Business Owner. Hoboken, NJ: John Wiley & Sons, 2007.

MLA-Zitierstil (9. Ausg.)

Leboff, Grant. Sales Therapy ?: Effective Selling for the Small Business Owner. John Wiley & Sons, 2007.