Cita APA (7th ed.)

Jobber, D., & Lancaster,Geoff. (1990). Selling and sales management (7th ed.). Pearson.

Cita Chicago (17th ed.)

Jobber, David, i Lancaster,Geoff. Selling and Sales Management. 7th ed. Delhi: Pearson, 1990.

Cita MLA (9th ed.)

Jobber, David, i Lancaster,Geoff. Selling and Sales Management. 7th ed. Pearson, 1990.