Withrow, J. 1. (1987). Effective writing: Writing skills for intermediate students of American English : student’s book. Cambridge [Cambridgeshire]: Cambridge University Press.
استشهاد بنمط شيكاغوWithrow, Jean 1937-. Effective Writing: Writing Skills for Intermediate Students of American English : Student’s Book. Cambridge [Cambridgeshire]: Cambridge University Press, 1987.
MLA استشهادWithrow, Jean 1937-. Effective Writing: Writing Skills for Intermediate Students of American English : Student’s Book. Cambridge [Cambridgeshire]: Cambridge University Press, 1987.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.