Oxford University Press. (2011). Oxford guide to plain English (11th impression.). Oxford University Press.
Cita Chicago (17th ed.)Oxford University Press. Oxford Guide to Plain English. 11th impression. New Delhi: Oxford University Press, 2011.
Cita MLA (9th ed.)Oxford University Press. Oxford Guide to Plain English. 11th impression. Oxford University Press, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.