Citazione Stile APA (7a Edizione)

Payne, J., & Dorn, W. R. (2012). Managing indirect spend: Enhancing profitability through strategic sourcing. Wiley.

Citazione stile Chigago Style (17a edizione)

Payne, Joseph, e William R. Dorn. Managing Indirect Spend: Enhancing Profitability Through Strategic Sourcing. Hoboken, N.J.: Wiley, 2012.

Citatione MLA (9a ed.)

Payne, Joseph, e William R. Dorn. Managing Indirect Spend: Enhancing Profitability Through Strategic Sourcing. Wiley, 2012.