Citazione Stile APA (7a Edizione)

Withrow, J. (2003). Effective writing: Writing skills for intermediate students of american english Student`s book. Cambridge University Press.

Citazione stile Chigago Style (17a edizione)

Withrow, Jean. Effective Writing: Writing Skills for Intermediate Students of American English Student`s Book. Cambridge: Cambridge University Press, 2003.

Citatione MLA (9a ed.)

Withrow, Jean. Effective Writing: Writing Skills for Intermediate Students of American English Student`s Book. Cambridge University Press, 2003.