Quigg, B., & Wisner, B. (1998). Selling the right way! Prentice Hall.
Cita Chicago (17th ed.)Quigg, Brooke, i Bern Wisner. Selling the Right Way! Upper Saddle River, N.J.: Prentice Hall, 1998.
Cita MLA (8th ed.)Quigg, Brooke, i Bern Wisner. Selling the Right Way! Prentice Hall, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.