Παραπομπή σε μορφή APA (7η εκδ.)

Heywood, J. B., Barton, M., & Heywood, C. (2002). E-procurement: Managing successful e-procurement implementation. Financial Times / Prentice Hall.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Heywood, J. Brian, Michael Barton, και Caroline Heywood. E-procurement: Managing Successful E-procurement Implementation. London: Financial Times / Prentice Hall, 2002.

Παραπομπή σε μορφή MLA (9th εκδ.)

Heywood, J. Brian, et al. E-procurement: Managing Successful E-procurement Implementation. Financial Times / Prentice Hall, 2002.