Cita APA (7a ed.)

HAMP-LYONS, L., & HEASLEY, B. (1990). Study writing: A Course in written english for academicand professional purposes. Cambridge University Press.

Cita Chicago Style (17a ed.)

HAMP-LYONS, Liz, y Ben HEASLEY. Study Writing: A Course in Written English for Academicand Professional Purposes. New York: Cambridge University Press, 1990.

Cita MLA (9a ed.)

HAMP-LYONS, Liz, y Ben HEASLEY. Study Writing: A Course in Written English for Academicand Professional Purposes. Cambridge University Press, 1990.