Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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