Παραπομπή APA

Semple, A., & Cook, M. (2015). A practical guide to public procurement. Oxford University Press.

Παραπομπή Chicago Style

Semple, Abby, και Mark Cook. A Practical Guide to Public Procurement. N.Y: Oxford University Press, 2015.

Παραπομπή MLA

Semple, Abby, και Mark Cook. A Practical Guide to Public Procurement. Oxford University Press, 2015.