Cita APA (7a ed.)

Roylance, D. (2006). Purchasing performance: Measuring, marketing and selling the purchasing function. Gower.

Cita Chicago Style (17a ed.)

Roylance, Derek. Purchasing Performance: Measuring, Marketing and Selling the Purchasing Function. Aldershot [etc.]: Gower, 2006.

Cita MLA (9a ed.)

Roylance, Derek. Purchasing Performance: Measuring, Marketing and Selling the Purchasing Function. Gower, 2006.