Cita APA (7th ed.)

KURTZ, D. L., & DODGE, H. R. (1991). Professional selling.-- Ed.6. Irwin.

Cita Chicago (17th ed.)

KURTZ, David L., i H. Robert DODGE. Professional Selling.-- Ed.6. Homewood: Irwin, 1991.

Cita MLA (9th ed.)

KURTZ, David L., i H. Robert DODGE. Professional Selling.-- Ed.6. Irwin, 1991.