Cita APA (7th ed.)

Shippey, T. A. Hard reading. Oxford University Press.

Cita Chicago (17th ed.)

Shippey, T. A. Hard Reading. Oxford University Press.

Cita MLA (8th ed.)

Shippey, T. A. Hard Reading. Oxford University Press.

Atenció: Aquestes cites poden no estar 100% correctes.