Cita APA (7th ed.)

Barrat, C., & Whitehead, M. (2004). Buying for business: Insights in purchasing and supply management. Wiley.

Cita Chicago (17th ed.)

Barrat, Christopher, i Mark Whitehead. Buying for Business: Insights in Purchasing and Supply Management. Chichester, West Sussex: Wiley, 2004.

Cita MLA (9th ed.)

Barrat, Christopher, i Mark Whitehead. Buying for Business: Insights in Purchasing and Supply Management. Wiley, 2004.