APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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