Cita APA (7th ed.)

Hewson, M., & Sinclair, T. J. (1999). Advanced English Grammar. State University of New York Press.

Cita Chicago (17th ed.)

Hewson, Martin, i Timothy J. Sinclair. Advanced English Grammar. New Delhi: State University of New York Press, 1999.

Cita MLA (9th ed.)

Hewson, Martin, i Timothy J. Sinclair. Advanced English Grammar. State University of New York Press, 1999.