Cita APA (7th ed.)
Welch, J. L., & Lapp, C. L. (1983). Sales force management. South-Western Pub. Co..
Cita Chicago (17th ed.)
Welch, Joe L., i Charles L. Lapp. Sales Force Management. Cincinnati: South-Western Pub. Co., 1983.
Cita MLA (9th ed.)
Welch, Joe L., i Charles L. Lapp. Sales Force Management. South-Western Pub. Co., 1983.
Atenció: Aquestes cites poden no estar 100% correctes.