HAMP-LYONS, L., & HEASLEY, B. (1990). Study writing: A Course in written english for academicand professional purposes. Cambridge University Press.
Chicago-referens (17:e uppl.)HAMP-LYONS, Liz, och Ben HEASLEY. Study Writing: A Course in Written English for Academicand Professional Purposes. New York: Cambridge University Press, 1990.
MLA-referens (9:e uppl.)HAMP-LYONS, Liz, och Ben HEASLEY. Study Writing: A Course in Written English for Academicand Professional Purposes. Cambridge University Press, 1990.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.