Παραπομπή σε μορφή APA (7η εκδ.)

Withrow, J. (1987). Effective writing: Writing skills for intermediate students of American English : student's book. Cambridge University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Withrow, Jean. Effective Writing: Writing Skills for Intermediate Students of American English : Student's Book. Cambridge [Cambridgeshire] ; New York: Cambridge University Press, 1987.

Παραπομπή σε μορφή MLA (8th εκδ.)

Withrow, Jean. Effective Writing: Writing Skills for Intermediate Students of American English : Student's Book. Cambridge University Press, 1987.