APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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