Booher, D. D. (1994). Communicate with confidence: How to say it right the first time and every time. McGraw-Hill.
Citazione stile Chigago Style (17a edizione)Booher, Dianna Daniels. Communicate with Confidence: How to Say It Right the First Time and Every Time. New York: McGraw-Hill, 1994.
Citatione MLA (9a ed.)Booher, Dianna Daniels. Communicate with Confidence: How to Say It Right the First Time and Every Time. McGraw-Hill, 1994.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.