Παραπομπή σε μορφή APA (7η εκδ.)

Withrow, J. (1987). Effective writing: Writing skills for intermediate students of american english Teacher´s Manual and answer Key. Cambridge University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Withrow, Jean. Effective Writing: Writing Skills for Intermediate Students of American English Teacher´s Manual and Answer Key. Cambridge: Cambridge University Press, 1987.

Παραπομπή σε μορφή MLA (9th εκδ.)

Withrow, Jean. Effective Writing: Writing Skills for Intermediate Students of American English Teacher´s Manual and Answer Key. Cambridge University Press, 1987.