Cita APA (7a ed.)

Hutchinson, T., & Waters, A. (1991). English for specific purposes: A learning-centred approach. Cambridge University Press.

Cita Chicago Style (17a ed.)

Hutchinson, Tom, y Alan Waters. English for Specific Purposes: A Learning-centred Approach. Cambridge: Cambridge University Press, 1991.

Cita MLA (8a ed.)

Hutchinson, Tom, y Alan Waters. English for Specific Purposes: A Learning-centred Approach. Cambridge University Press, 1991.