Cita APA (7a ed.)

Hutchinson, T., & Waters, A. (1987). English for specific purposes: A learning-centred approach (1st.). Cambridge University Press.

Cita Chicago Style (17a ed.)

Hutchinson, Tom, y Alan Waters. English for Specific Purposes: A Learning-centred Approach. 1st. Cambridge [UK]: Cambridge University Press, 1987.

Cita MLA (8a ed.)

Hutchinson, Tom, y Alan Waters. English for Specific Purposes: A Learning-centred Approach. 1st. Cambridge University Press, 1987.