Campbell, D. S. (1995). Better sentence-writing in 30 minutes a day (Trade ed.). Career Press.
Chicago-referens (17:e uppl.)Campbell, Dianna S. Better Sentence-writing in 30 Minutes a Day. Trade ed. Franklin Lakes, N.J: Career Press, 1995.
MLA-referens (9:e uppl.)Campbell, Dianna S. Better Sentence-writing in 30 Minutes a Day. Trade ed. Career Press, 1995.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.