Παραπομπή σε μορφή APA (7η εκδ.)

Payne, J., & Dorn, W. R. (2012). Managing indirect spend: Enhancing profitability through strategic sourcing. Wiley. https://doi.org/10.1002/9781118386828

Παραπομπή σε μορφή Chicago (17η εκδ.)

Payne, Joseph, και William R. Dorn. Managing Indirect Spend: Enhancing Profitability Through Strategic Sourcing. Hoboken, N.J.: Wiley, 2012. https://doi.org/10.1002/9781118386828.

Παραπομπή σε μορφή MLA (8th εκδ.)

Payne, Joseph, και William R. Dorn. Managing Indirect Spend: Enhancing Profitability Through Strategic Sourcing. Wiley, 2012. https://doi.org/10.1002/9781118386828.